1 Availability and Disaster Recovery: Basic Principles by Chuck Petch, WVS Senior Technical Writer At first glance availability and recovery may seem like opposites. Availability involves designing computer systems and networks to prevent down time from failures, while recovery deals with recovering from failures, including failures caused by natural disasters. These topics are really two sides of the same coin. There are a few key principles in designing systems for high availability and rapid disaster recovery: Design redundancy into all hardware systems to minimize the effects of failures and disasters. Plan backups so that backup data is always readily and quickly available. Live mirroring to disk provides the highest level of backup safety and the fastest recovery. Maintaining redundant hardware and backups off site guards against disasters at your primary site. Hardware and data protection strategies built around these key principles can enable you to return your system to operation quickly when failures or disasters occur.
2 Why You Need an Availability and Recovery Plan to Protect Your Data Many businesses and agencies don t spend much time designing their computer systems to make recovering from a failure or a disaster easy. Consequently, when hardware failures or disasters happen, it takes far longer to get their computer network back into full operation than it should. They may lose business, or they may even go out of business if the disaster is severe enough and the company s resources are limited. It s easy to dismiss failures and disasters as unlikely, but they happen every day. Electrical failures and power spikes, broken water pipes or fire sprinklers, earthquakes, floods, fires, and simple equipment failures are commonplace. At any moment you could find yourself replacing cables, server components, disk drives, network routers, power supplies, and trying to recover data as well. Any one of those repairs could take your system down until you can get them completed. Even worse, uncontrollable factors could slow your recovery by days or even weeks: What if parts aren t available quickly? What if your entire computing system is destroyed? What if a local disaster affects not only you but also your employees, and they are too busy putting their homes back together to worry about your computer systems? Could your business survive, and could you keep your job if it took weeks to get your computer systems working again? If you design your computer systems to be fault tolerant, many failures will cause you no down time at all. Here s the bottom line: If you design your computer systems to be fault tolerant, many failures will cause you no down time at all. And even those that do cause down time will not be nearly so catastrophic. Wouldn t it feel great to great to discover a failure and in the next moment realize your fault tolerant system design ensures users will never even know a failure occurred? They keep right on working, you keep your job, and your business goes right on being successful. It all comes down to planning and making wise choices in how you configure your systems. You have to design your system so that you control it, and it doesn t control you. The first step is planning for availability and recovery and then implementing your plan. c 2
3 Planning for Availability Availability or high availability has been a buzzword in IT for quite some time. Often it describes a particular product designed specifically for applications where little or no down time can be tolerated. But high availability is something that can be designed into every component of your computer system and not necessarily at great cost, especially compared to the cost of a major failure. When you begin to look at availability, remember that your purpose is to create a system using redundant components and data paths so that if one fails, you can switch the load over to the remaining components with little or no down time and little performance impact. Begin by listing each component in your network, and asking yourself these questions: What happens if this component fails? Is there a backup component? What about its internal components? Do they have backups? If you have to replace a component or do routine maintenance such as a software or firmware upgrade, can backup components carry the load while you do the work? Will they be overloaded? If any component or subcomponent on your list has no backup, that s a danger point. Write down the component and its backup on your list, or better yet, create a full network schematic showing all components and subcomponents. If any component or subcomponent on your list has no backup, that s a danger point. If that item goes down, potentially some users or even your whole network goes down. You need to figure out a backup plan for that item immediately. Let s consider the components of your computing network and look at strategies to improve their availability. Power Connect similar devices to separate branch circuits. Every component you have in your computing system requires power, so wiring your power sensibly can do a lot to protect the whole system. It goes without saying that you need surge suppression and filtering for every device to protect it from damage by power fluctuations. If you can afford it, you ll also want a UPS or multiple small UPS s to keep your system running during power outages. It is especially important to connect similar devices to separate branch circuits. If you have multiple network switches, power them from different breakers. If you have a server with redundant power supplies, connect one power supply to one circuit breaker, and the other power supply to a different circuit breaker. That way, if one breaker trips, your server still receives power through the other breaker. This kind of redundancy can be a lifesaver for the systems on your network. 3
4 Servers You can buy multiple inexpensive self-contained servers, or you can buy rack-mounted server enclosures that accept multiple server cards. The racked server system may cost more, but it makes expansion easy. You just slide in a new processor card, and you ve got another server. On the other hand, if a disaster happens, such as fire sprinklers turning on in your computer room, you have all your servers in one rack, and they will all go down together. For high availability, the ideal server scenario is to have at least two units, physically separated by distance. Buy servers with redundant components installed, especially power supplies and disk drives, which are prone to failure. For high availability, the ideal server scenario, whether you go rack mounted or self-contained, is to have at least two units, physically separated by distance. They should be at least in separate rooms, better yet in separate buildings, and better still in different cities. We ll talk more about this later in the disaster recovery section. Buy servers with redundant components installed, especially power supplies and disk drives, which are prone to failure. Preferably get at least two of everything in each server. Get redundant processors, redundant power supplies, redundant disk drives, and redundant networking cards. The extra expense is well worth it to reduce or eliminate down time from failures. Talk with the manufacturer about the best way to configure the system so that these components back each other up. For example, some servers, operating systems, and software can detect failures and automatically switch over from the primary component(s) to the hot running spare components. If the system is well-designed, the switchover is invisible to users. Even if you can t afford a high availability server that can automatically detect failures and switch over to secondary devices, buying servers with built-in redundant components is a necessity. Even a manual switchover when the spares are already installed and running will take far less time than taking cold spares off the shelf and installing them, or worse, having to go out and buy parts on an emergency basis and install them. Clustering software allows servers to share processing. It s also a good idea to cluster your servers. Clustering software, such as Microsoft Windows Cluster Service, allows servers to share processing so if one server goes down, the remaining processors can pick up the tasks of the failed unit and continue operating. This provides excellent failure protection for your users. Just be sure no single server operates at more than 50% of its capacity so its workload does not overload the other server(s) in the cluster if they have to assume its tasks. 4
5 Network Redundant network switches and data paths improve availability of your network. By using multiple paths through multiple switches, you ensure that if a path breaks, you still have alternate paths available. This is called multipathing, and you can buy specific software packages to manage a multipath network. Redundant network switches and data paths improve availability of your network. For example, let s assume you have two servers sharing a disk array through a storage area network. You could simply run one network connection from each server through a single switch to the array, but if the switch breaks, your entire network goes down, and if a network card goes down in one of the servers, that server goes down. For better availability, put two network cards in each server. Then buy two switches and create two networks as shown in the figure below. Run dual connections from both servers through both switches to your storage system. This dual redundant network ensures that if either network card in a server goes down, the server stays on the network, and if one switch goes down, you still have paths available through the other switch, and your network stays up. 5
6 A redundant network has further advantages for maintenance. If you want to take the switches down for firmware upgrades, you can take them down one at a time, leaving your network fully operational. Before doing this, though, be sure you don t have a workload heavier than 50% going through either switch so you don t overload the remaining switch when it handles all of the workload. If economics prevent you from buying multiple switches, the next best thing is to buy a modular switch and route redundant paths through redundant line module cards in the switch. This protects you if a card goes down, but it won t protect you if the entire switch goes down. On the other end of the network at the storage device, use multiple paths to separate ports on different network cards. As with the servers, this ensures that if one port or card breaks, you have another path available. Planning for Recovery What should you consider when planning for disaster recovery? Not surprisingly, many of the strategies you use to prevent down time from failures also enable you to recover quickly in the event of an unavoidable disaster. Data backups, local and off-site Redundant hardware systems, local and off-site Data Backups Snapshots of data taken throughout the day from the primary disks and copied to backup disks yield better protection because you back up data as users create it. Ideally, you can do live mirroring of your data to backup disks. Any recovery plan begins with backups. You must have daily backups of all data at the very minimum, and you need to take the backups off-site to protect them. You can do backups to tape, which is cheap but also slow and possibly unreliable because of frequent tape errors. Tape backups are easy to set up for automation during offline hours, but tape is notorious for errors as tape stretches and distorts with regular reuse. If you use tape, you ll want to test your backups frequently by doing a restoration from tape. You can do offline backups more easily to disk than to tape, but buying extra disks is more costly than tape. Still, disk drives and disk arrays are getting so cheap, that it s hard to make a case for tape anymore. Again, you ll want nightly backups at the very least. More frequent snapshots of data taken throughout the day from the primary disks and copied to backup disks yield better protection because you back up data as users create it. You can buy snapshot software and schedule your servers to save periodic snapshots of their primary data to the backup disks. Ideally, if you have enough disks to give you adequate performance and space, you can do live mirroring of your data to backup disks. In this arrangement, you set up mirroring software to automatically copy every transaction to both the primary and backup disks. Alternatively, if you are 6
7 using a disk array with RAID1 capability, you can set up the array to provide automatic live mirroring of data from primary disks to secondary disks within the array. Then if you lose data on a primary disk, you can quickly restore it from the mirror, or your server may be able to automatically switch over to the mirror if the primary disk or data fails. The only disadvantage with snapshots and mirrors is the cost of disk space. You only get 50% efficiency from your disks because the same data occupies two separate and equal disk spaces. To overcome this, many disk arrays also offer other RAID levels that do not use as much disk space as mirroring but still offer good protection against lost data and disk drive failure. For example, a disk array configured for RAID5 writes data only once to a set of primary disks, but it writes parity information with the data. If a disk fails, you can use the disk array software to reconstruct the failed disk from the remaining data plus parity. In this way you get greater space efficiency than mirroring but you still have excellent protection for your data. If you need the highest possible availability, use live mirroring with automatic switchover in case of primary data or disk failure. If you need the highest possible availability, use live mirroring with automatic switchover in case of primary data or disk failure. With a backup constantly being made and constantly available, your data is well protected. The difficulty with all of these backup arrangements is that you must get the backups off site to protect them from a potential disaster at your main site. This means you have to set up a data center separate from your main site and perform tape or disk backups at the remote location. If your company can t afford these separate facilities, a reasonably priced alternative may be to find a computer systems vendor who will provide backup services for you. A computer systems and services vendor may be able to offer you a cost-effective set of remote backup alternatives: Accepting tapes for storage in their fireproof vault Performing nightly backups over the internet from your machines to their tape or disk drives Providing full live mirroring of data from your machines to theirs Before you spend the money to set up your own remote data center, call your systems vendor to see if they can offer you a cheaper alternative. Redundant Hardware Just about everybody knows you have to back up your data, but backing up your hardware can be just as important. Previously in the availability section we talked about judiciously using redundant hardware to ensure you can recover quickly from a failure. But what if you were to locate your redundant hardware off site instead of in the same building? That s the essence of a hardware disaster recovery plan. Just about everybody knows you have to back up your data, but backing up your hardware can be just as important. It will do you no good to have 7
8 your data backed up off site if your computer systems have been destroyed by a disaster. You would have to set up a new emergency computing center at some other location, essentially duplicating your entire computing infrastructure at a moment s notice. Not easy, not fast, not cheap, and not a pretty picture. If your vital servers and hardware systems are replicated across town, or preferably in another city, you are ready to handle any disaster On the other hand, if your vital servers and hardware systems are replicated across town, or preferably, in another city, you are ready to handle any disaster. Your data is backed up or mirrored on the remote hardware, and the computing infrastructure is in place so that all you have to do is switch over to handling all of your computing at the remote site. This might typically take a few minutes to a few hours, depending on your setup, but it surely beats the days or weeks it would take you to throw together an emergency system from scratch after a disaster. Again, you may not be able to afford to set up your own complete duplicate computer room in another location, but you may get the services you need from a computer systems house, for example: Pay a small annual fee for the option to temporarily use the vendor s space and equipment if yours fails. Lease part time access to space and equipment from a vendor. For example, the vendor could do your nightly backups at his site using his equipment. Lease full time access to space and equipment from a vendor. For example, you do your remote snapshots or live mirroring to the vendor s equipment. Making a List and Checking it Twice No matter what your hardware and data protection plans are, be sure you document them and test them. No matter what your hardware and data protection plans are, be sure you document them and test them. In an emergency, you will need to know what equipment and data is stored where and who is responsible for each. Your plan should include at least these things: A written data backup procedure with task assignments A list of hardware and their locations or a network schematic showing each piece of hardware, its location, and the location of its backup Architectural drawings showing wiring and physical building layout A list of software licenses and license keys Data maps showing where all your primary and backup databases are stored Disaster recovery procedures with task assignments and a calling tree. Each person should know whom to call and what equipment and data are their responsibility to restore in what priority order. If you need help planning and writing backup and recovery procedures, WVS can help. Make sure all team members take document copies home, and store copies at your off-site location. 8
9 Periodically schedule a test of your recovery plan. If your documents are outdated or your team doesn t know what to do, your plan will fail. Even your data backups may not be trustworthy if you don t test them regularly to make sure you can use them to restore your data. With good data backup and hardware restoration plans, your business will be able to tolerate routine equipment failures without incident. In the event of a disaster, your business could be one of the great survival and recovery stories. Summary of Recommendations Design redundancy into all the components of your computer systems A UPS and filtering are standard requirements. Wire redundant power supplies to separate breakers. Set up redundant servers, preferably in different locations. Use clustering to enable servers to share workload and multipathing to ensure network resiliency Set up as much off-site data backup and hardware redundancy as you can afford. Vendors may offer cost-effective backup services. Create and regularly test a written recovery plan to restore hardware, software, and data in an emergency. 9
10 Call us when you need technical documentation We re experts at technical writing of all types, including hardware and software documentation, marketing literature, white papers, procedures, and web content. We specialize in making complex information easy to understand and use. Phone Voice Toll-Free FAX and Internet Address WVS The Technical Writing Company 552 Brock Road Nevada City, CA
Westek Technology Snapshot and HA iscsi Replication Suite Westek s Power iscsi models have feature options to provide both time stamped snapshots of your data; and real time block level data replication
9916 Brooklet Drive Houston, Texas 77099 Phone 832-327-0316 www.safinatechnolgies.com RAID Made Easy By Jon L. Jacobi, PCWorld What is RAID, why do you need it, and what are all those mode numbers that
SANmelody Application Affordable Remote Data Replication Your Data is as Valuable as Anyone s You know very well how critical your data is to your organization and how much your business would be impacted
Leveraging Virtualization for Disaster Recovery in Your Growing Business Contents What is Disaster Recovery?..................................... 2 Leveraging Virtualization to Significantly Improve Disaster
Preventing Data Loss INSIDE > Disaster Recovery Types and Categories > Disaster Recovery Site Types > Disaster Recovery Procedure Lists > Business Continuity Plan 1 Preventing Data Loss White Paper Overview
TECHNICAL NOTE VMware Infrastructure 3 SAN Conceptual and Design Basics VMware ESX Server can be used in conjunction with a SAN (storage area network), a specialized high speed network that connects computer
Eastman Kodak Company 343 State Street Rochester, NY 14650-0238 USA Revision date: March 2014 White Paper Contact Name Robyn Lundstrom PSSG Specialist, KODAK Unified Workflow Solutions email@example.com
Data Integrity: Backups and RAID Introduction Keeping your data safe and reliable TM Backups Types of backups Strategy Tools RAID (Redundant Array of Independent Disks) Types of RAID What type to Use Disk
Assess, Adjust, Improve An LXI Publication Page 1 of 11 Your company's ability to recover is a high priority. In a survey by Contingency Planning & Management Magazine of 1437 contingency planners, 76%
Data Backup Options for SME s As an IT Solutions company, Alchemy are often asked what is the best backup solution? The answer has changed over the years and depends a lot on your situation. We recognize
Summary The aim of this article is to present some basic information about Small Business Server 2003 and how it can fit in with your business. Topics What is Small Business Server? (also known as SBS)
W H I T E P A P E R S O L U T I O N : D I S A S T E R R E C O V E R Y T E C H N O L O G Y : R E M O T E R E P L I C A T I O N Disaster Recovery Strategies: Business Continuity through Remote Backup Replication
CHAPTER 4 Introduction This chapter describes in general terms backing up a Cisco Unity system. When you back up a Cisco Unity server (and one or more Exchange servers) you need to consider the same issues
5 DEADLY MISTAKES THAT BUSINESS OWNERS MAKE WITH THEIR COMPUTER NETWORKS AND HOW TO PROTECT YOUR BUSINESS 1 Introduction As small and mid-sized companies rely more heavily on their computer networks to
Security+ Guide to Network Security Fundamentals, Fourth Edition Chapter 13 Business Continuity Objectives Define environmental controls Describe the components of redundancy planning List disaster recovery
Business Continuity & Disaster Recovery Plan Last Updated: June 16, 2009 Business Continuity & Disaster Recovery Plan Page 2 of 6 Table of Contents Introduction... 3 Business Continuity... 3 Employee Structure...
Contingency Planning and Disaster Recovery Best Practices Guide Perceptive Content Version: 7.0.x Written by: Product Knowledge Date: October 2014 2014 Perceptive Software. All rights reserved Perceptive
Informix Dynamic Server May 2007 Availability Solutions with Informix Dynamic Server 11 1 Availability Solutions with IBM Informix Dynamic Server 11.10 Madison Pruet Ajay Gupta The addition of Multi-node
WHITE PAPER The Microsoft Large Mailbox Vision Giving users large mailboxes without breaking your budget Introduction Giving your users the ability to store more e mail has many advantages. Large mailboxes
Combining Onsite and Cloud Backup How businesses of all sizes can protect growing volumes of data and their bottom line Copyright Acronis, Inc., 2002 2012 ompanies of all sizes are dealing with large and
IT Service Management Service Continuity Methods (Disaster Recovery Planning) White Paper Prepared by: Rick Leopoldi May 25, 2002 Copyright 2001. All rights reserved. Duplication of this document or extraction
IBM TotalStorage IBM TotalStorage Virtual Tape Server A powerful tape storage system that helps address the demanding storage requirements of e-business storag Storage for Improved How can you strategically
Disk drives are an integral part of any computing system. Disk drives are usually where the operating system and all of an enterprise or individual s data are stored. They are also one of the weakest links
NSA Cloud Suite Powered by BUSINESSES NEED TO MAXIMIZE PRODUCTIVITY, LOWER COSTS AND DECREASE RISKS EVERY DAY. In this age of information, this means you need your servers, desktops and applications up
Disaster Recovery Planning for Homesteaders 2004 Paul Edwards & Associates Introduction The term homesteading comes from the days of the pioneers that setled in the midwest and western United States. That
SMALL BUSINESS ESSENTIAL TECHNOLOGY INTRODUCTION Offsite Backup with Fast Recovery How not to be stranded, pulling your hair out, waiting a couple of weeks for your server to be rebuilt. STOP USING TAPE
Backup & Disaster Recovery Options Since businesses have become more dependent on their internal computing capability, they are increasingly concerned about recovering from equipment failure, human error,
Exchange Data Protection: To the DAG and Beyond Whitepaper by Brien Posey Exchange is Mission Critical Ask a network administrator to name their most mission critical applications and Exchange Server is
technology brief RAID Levels March 1997 Introduction RAID is an acronym for Redundant Array of Independent Disks (originally Redundant Array of Inexpensive Disks) coined in a 1987 University of California
Disaster Recovery Maximizing Business Continuity and Minimizing Recovery Time Objectives in Windows Server Environments Executive Summary TechAdvisory.org SME Reports sponsored by D-Net is your partner
SURVEY ON RAID Aishwarya Airen 1, Aarsh Pandit 2, Anshul Sogani 3 1,2,3 A.I.T.R, Indore. Abstract RAID stands for Redundant Array of Independent Disk that is a concept which provides an efficient way for
Technical White Paper Disaster Recovery for Small Businesses A disaster recovery plan helps you understand what data is critical to your business operations and how to best protect it from unexpected failures.
Disaster Recovery and Business Continuity What Every Executive Needs to Know Bruce Campbell & Sandra Evans Contents Why you need DR and BC What constitutes a Disaster? The difference between disaster recovery
Mapping Your Path to the Cloud A Guide to Getting your Dental Practice Set to Transition to Cloud-Based Practice Management Software. Table of Contents Why the Cloud? Mapping Your Path to the Cloud...4
REMOTE OFFICE BACKUP Remote offices present IT managers with a number of technical challenges. Often businesses use remote offices to expand into either new markets, or into new geographical areas. Many
. White Paper Disaster Recovery Remote off-site Storage for single server environment When it comes to protecting your data there is no second chance January 1, 200 Prepared by: Bill Schmidley CompassPoint
16 Common Backup Problems & Mistakes 1. Tape errors, Tape Drive failures. Probably the number one backup problem is simply caused by the unreliability of tape. Tape drives have a higher failure rate than
Achieving High Availability What You Need to Know before You Start James Bottomley SteelEye Technology 21 January 2004 1 What Is Availability? Availability measures the ability of a given service to operate.
content provided by sponsored by The New Rules for Choosing Physical Appliances The increased presence of virtualization in organizations hasn t lessened the need for physical backup appliances. Follow
RAID HARDWARE On board SATA RAID controller SATA RAID controller card RAID drive caddy (hot swappable) Anne Watson 1 RAID The word redundant means an unnecessary repetition. The word array means a lineup.
What You Should Know About Cloud- Based Data Backup An Executive s Guide to Data Backup and Disaster Recovery Matt Zeman 3Fold IT, LLC PO Box #1350 Grafton, WI 53024 Telephone: (844) 3Fold IT Email: Matt@3FoldIT.com
Your guide to choosing an IT support provider T: 08452 41 41 55 Contents Introduction 3 IT and business continuity 4 About managed services 5 Modular vs packaged support 6 Checklist of supplier questions
Click here to print this article. Re-Printed From SLCentral RAID: An In-Depth Guide To RAID Technology Author: Tom Solinap Date Posted: January 24th, 2001 URL: http://www.slcentral.com/articles/01/1/raid
Cloud Computing Chapter 10 Disaster Recovery and Business Continuity and the Cloud Learning Objectives Define and describe business continuity. Define and describe disaster recovery. Describe the benefits
s Ask a Broadband Expert Series: The Advantages of Network Virtualization An Interview with Peter Olivia, Director of Systems Engineering ZCorum 1.800.909.9441 4501 North Point Parkway, Suite 125 Alpharetta,
High availability and disaster recovery White Paper High availability and disaster recovery with Microsoft, Citrix and HP Using virtualization, automation and next-generation storage to improve business
Maximizing Data Center Uptime with Business Continuity Planning Next to ensuring the safety of your employees, the most important business continuity task is resuming business critical operations. Having
DeltaV Distributed Control System Whitepaper October 2014 DeltaV Virtualization High Availability and Disaster Recovery This document describes High Availiability and Disaster Recovery features supported
the Availability Digest Backup Is More Than Backing Up May 2009 So you think that your corporate data is safe? Your company s data is its lifeblood. Lose it without the chance of recovery, and your company
ImproMed LLC How to Plan for Disaster Recovery Revised January 27, 2015 2015 ImproMed, LLC. All rights reserved. No part of this publication may be reproduced, transmitted, transcribed, stored in a retrieval
Protecting SQL Server in Physical And THE NEED TO PROTECT SQL SERVER AND RELATED APPLICATIONS Microsoft SQL Server is the preferred database management system for a large number of Windows-based applications.
A review of BackupAssist within a Hyper-V Environment By Brien Posey 2 Contents Introduction... 3 An Introduction to BackupAssist... 4 Testing Methodologies... 5 Test 1: Restore a Virtual Machine s Configuration...
WHITE PAPER: DATA PROTECTION Veritas NetBackup for Microsoft Exchange Server Solution Guide Bill Roth January 2008 White Paper: Veritas NetBackup for Microsoft Exchange Server Solution Guide Content 1.
Maximizing Business Continuity and Minimizing Recovery Time Objectives in Windows Server Environments StorageCraft Technology Corporation Backup Fast, Recover Faster 2010 StorageCraft Technology Corporation.
Backup and Redundancy White Paper NEC s UC for Business Backup and Redundancy allow businesses to operate with confidence, providing security for themselves and their customers. When a server goes down
Backing IT Up A guide from Chiltern Business Computing Ltd Every business depends on its computer systems to some degree or other. For many, systems are vital to business survival and success. This brief
Slide 1 How Does the ECASD Network Work? Jim Blodgett, Network Engineer Slide 2 Network Overview The ECASD Network has 3500 computers, 350 switches, 100 servers and 13000 users spread over 22 different
Fault Tolerance & Reliability CDA 5140 Chapter 3 RAID & Sample Commercial FT Systems - basic concept in these, as with codes, is redundancy to allow system to continue operation even if some components
TADCASTER GRAMMAR SCHOOL Toulston, Tadcaster, North Yorkshire. LS24 9NB BACKUP STRATEGY AND DISASTER RECOVERY POLICY STATEMENT Written by Steve South November 2003 Discussed with ICT Strategy Group January
22 Questions You Should Ask Your Computer Consultant BEFORE HIRING THEM TO SUPPORT YOUR NETWORK Stuart J. Bryan I-M TECHNOLOGY, LLC 131 PROVIDENCE STREET, TAFTVILLE, CT 06380 22 Questions You Should Ask
Introduction By leveraging the inherent benefits of a virtualization based platform, a Microsoft Exchange Server 2007 deployment on VMware Infrastructure 3 offers a variety of availability and recovery
The Essentials Series: Configuring High Availability for Windows Server 2008 Environments Non-Native Options for High Availability by Non-Native Options for High Availability... 1 Suitability and Cost...
Database Resilience at ISPs High-Availability White Paper Internet Service Providers (ISPs) generally do their job very well. The commercial hosting market is segmented in a number of different ways but
Five Secrets to SQL Server Availability EXECUTIVE SUMMARY Microsoft SQL Server has become the data management tool of choice for a wide range of business critical systems, from electronic commerce to online
Assuring High Availability in Healthcare Interfacing Considerations and Approach High availability is a term used in the software industry to indicate that the application is available a high percentage
Cyber Security: Guidelines for Backing Up Information A Non-Technical Guide Essential for Executives, Business Managers Administrative & Operations Managers This appendix is a supplement to the Cyber Security:
Presented at the ISPE ISA Automation Forum - 2010 Living in a Virtual World with Tangible Results. Virtualization Overview and Real World Case Study. Author Name Andy Robinson (Avid Solutions) Bill Porter
High Availability and Disaster Recovery Solutions for Perforce This paper provides strategies for achieving high Perforce server availability and minimizing data loss in the event of a disaster. Perforce
Smart Storage and Modern Data Protection Built for Virtualization Dot Hill Storage Arrays and Veeam Backup & Replication Software offer the winning combination. Veeam and Dot Hill Solutions Introduction
Frequently Asked Questions about Cloud and Online Backup With more companies realizing the importance of protecting their mission-critical data, we know that businesses are also evaluating the resiliency
Taking a Fresh Look at Business Continuity and Disaster Recovery The Essentials Series sponsored by Introduction to Realtime Publishers by, Series Editor For several years now, Realtime has produced dozens
The Essential Guide for Protecting Your Legal Practice From IT Downtime www.axcient.com Introduction: Technology in the Legal Practice In the professional services industry, the key deliverable of a project
EMC Backup and Recovery for Microsoft SQL Server 2008 Enabled by EMC Celerra Unified Storage Applied Technology Abstract This white paper describes various backup and recovery solutions available for SQL
SYMMETRY WHITE PAPER Business Continuity & High Availability Options Adam Shane Introduction Today, more than ever, security is a mission critical business component. This is not only true for our customers
Improving Data Center Performance Through Virtualization of SQL Server Databases Contents Abstract. 1 SQL Server s Role Inside SMBs. 2 IT s Biggest Data Center Concerns. 2 Virtualization is the Solution.
Contents Introduction What is the Cloud? How does it work? Types of Cloud Service Cloud Service Providers Summary Introduction The CLOUD! It seems to be everywhere these days; you can t get away from it!
MICROSOFT EXCHANGE 2003 best practices BEST PRACTICES - DATA STORAGE SETUP TABLE OF CONTENTS E-mail has become a business critical communication tool 3 Build a disaster recovery solution with VSS and Data
WHITE PAPER: CA ARCserve Backup Network Data Management Protocol (NDMP) Network Attached Storage (NAS) Option: Integrated Protection for Heterogeneous NAS Environments CA ARCserve Backup: Protecting heterogeneous
Data ONTAP 8.2 High Availability and MetroCluster Configuration Guide For 7-Mode NetApp, Inc. 495 East Java Drive Sunnyvale, CA 94089 U.S. Telephone: +1(408) 822-6000 Fax: +1(408) 822-4501 Support telephone:
DISASTER RECOVERY AND NETWORK REDUNDANCY WHITE PAPER Disasters or accidents would cause great harm on network infrastructure. It is unavoidable and the operation of network would be hampered for a long
W H I T E P A P E R Disaster Recovery: You Can Afford It Preparing for a data disaster is one of those projects that is always getting delayed in small and medium sized businesses. The daily proverbial
Stretching A Wolfpack Cluster Of Servers For Disaster Tolerance Dick Wilkins Program Manager Hewlett-Packard Co. Redmond, WA firstname.lastname@example.org Motivation WWW access has made many businesses 24 by 7 operations.