capacity management for StorageWorks NAS servers

application notes hp OpenView capacity management for StorageWorks NAS servers First Edition (February 2004) Part Number: AA-RV1BA-TE This document describes how to use HP OpenView Storage Area Manager version 3.1 to manage capacity on supported HP StorageWorks NAS servers. Additional information about Storage Area Manager is available at: http://h18006.www1.hp.com/products/storage/software/sam/index.html. Additional information about NAS products is available at: http://h18006.www1.hp.com/storage/networkattached.html.

Copyright 2004 Hewlett-Packard Development Company, L.P. Hewlett-Packard Company makes no warranty of any kind with regard to this material, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. Hewlett-Packard shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing, performance, or use of this material. This document contains proprietary information, which is protected by copyright. No part of this document may be photocopied, reproduced, or translated into another language without the prior written consent of Hewlett-Packard. The information contained in this document is subject to change without notice. Compaq Computer Corporation is a wholly-owned subsidiary of Hewlett-Packard Company. Microsoft, Windows, and Windows NT are trademarks of Microsoft Corporation in the U.S. and/or other countries. Hewlett-Packard Company shall not be liable for technical or editorial errors or omissions contained herein. The information is provided as is without warranty of any kind and is subject to change without notice. The warranties for Hewlett-Packard Company products are set forth in the express limited warranty statements for such products. Nothing herein should be construed as constituting an additional warranty. Printed in the U.S.A. Capacity Management for StorageWorks NAS Servers Application Notes First Edition February 2004 Part Number: AA-RV1BA-TE 2 Capacity Management for StorageWorks NAS Servers Application Notes

About this document About this document This document describes how to monitor and manage capacity for a Windows-powered HP StorageWorks Network Attached Storage (NAS) server by using it as a Windows host for HP OpenView Storage Area Manager (SAM) v3.1. This document provides supplemental information that is not available in either the Storage Area Manager or NAS documentation sets. It does not describe all aspects of installation, configuration, or operation for either product. Therefore, in addition to this document, you must have access to and familiarity with the documentation for both products. This section covers the following topics: Document contents Intended audience Document contents Intended audience Related documentation This document covers the following topics: Overview, page 5 Related documentation Installing the host agent on the NAS server, page 8 Discovering the NAS server as a Windows host, page 11 Managing capacity with Storage Builder and NAS file screening, page 16 Managing consumption with Storage Builder and NAS storage quotas, page 18 This document is intended for both implementation professionals and end users. The Storage Area Manager solution, including management server, client, and host agent software, is delivered by Implementation Service professionals, who initially install and configure the entire software suite. After this initial base service, customers can choose to install additional host agents. For more information about Storage Area Manager, refer to the following: HP OpenView Storage Area Manager Installation Guide HP OpenView Storage Area Manager Administrator s Guide HP OpenView Storage Area Manager Release Notes HP OpenView Storage Area Manager Online Help For more information about NAS servers, refer to the following: HP StorageWorks NAS b3000 v2 and e7000 v2 Administration Guide HP StorageWorks NAS 4000s and 9000s Administration Guide Capacity Management for StorageWorks NAS Servers Application Notes 3

About this document The preceding lists contain only a portion of all the documentation available for the Storage Area Manager and NAS products. Complete Storage Area Manager documentation is available at the following locations: HP Product Manuals Search web site at http://ovweb.external.hp.com/lpe/doc_serv/ ecare website at http://support.openview.hp.com Complete documentation for the supported NAS versions is available by following the links on http://h18006.www1.hp.com/storage/networkattached.html. 4 Capacity Management for StorageWorks NAS Servers Application Notes

Overview Overview HP OpenView Storage Area Manager is a client/server software suite that provides centralized storage monitoring and management. If you use Storage Area Manager to manage capacity utilization in a storage area network (SAN), you can also manage capacity for Windows-powered HP StorageWorks NAS servers as Windows hosts. After installation of the Storage Area Manager host agent, the NAS server can take advantage of Storage Node Manager and Storage Builder functionality just as any other Windows host, including: Automated discovery and topology mapping Continuous health monitoring and real-time event status information Storage allocation and utilization views Historical trending and future extrapolations Reports, graphs, and charts for capacity management and planning Automated notification of capacity threshold violations HP has successfully tested and supports Storage Area Manager v3.1 host agents on the following NAS systems: HP StorageWorks NAS b3000 v2 HP StorageWorks NAS e7000 v2 HP StorageWorks NAS 4000s HP StorageWorks NAS 9000s Note: To date, Storage Area Manager support for older HP Windows-powered NAS devices (NAS b2000, NAS b3000 v1, and NAS e7000 v1) has been limited to discovery and health monitoring. Storage Area Manager enables this functionality through the use of properties files. If you want to implement capacity management as described in this document for the newer NAS b3000 v2 or NAS e7000 v2, you must delete the properties files for these devices. As a result, discovery and health monitoring for the earlier v1.0 versions will no longer be supported. Capacity management is not supported for the NAS b2000, NAS b3000 v1, or NAS e7000 v1 in either the properties files or host agent-based implementations. See the Single Point of Connectivity Knowledge (SPOCK) web site for additional information about supported NAS devices at http://turbo.rose.hp.com/spock. Capacity Management for StorageWorks NAS Servers Application Notes 5

H E W L E T T P A C K A R D Overview Figure 1 shows a configuration that includes the Storage Area Manager server, client, and a NAS device attached to storage. In this configuration, the Storage Area Manager host agent is installed on the NAS device, which acts as a managed host. Management Client Management Server LAN Win2K Managed Host - NAS Device FC / SCSI / ENET SAN- or direct- Attached Storage B3000v2 E7000v2 4000s 9000s pull Client application downloaded to remote system via browser push Host Agent s/w pushed to NAS Arrays, Disks, Tape NAS Figure 1: Storage Area Manager and NAS host configuration Instructions for using Storage Area Manager and NAS functionality together begin on page 8. To learn more about Storage Area Manager and the supported NAS servers, see About HP OpenView Storage Area Manager and About the HP StorageWorks NAS family below. About HP OpenView Storage Area Manager The Storage Area Manager solution includes a management server, one or more clients, and one or more SAN hosts. The management server software is installed on a Windows 2000 system. The management client is a Windows 2000, Windows XP, HP-UX, Linux, or Sun Solaris host on which the Storage Area Manager user interface is installed. You access and run Storage Area Manager from the management clients. Storage Area Manager also employs host agent software on each SAN host. Once installed, the host agent enables communication between the server and the storage devices that are connected to the host. Storage Area Manager supports HP Windows-powered NAS servers as Windows hosts. The Storage Area Manager software suite consists of five applications: Storage Node Manager, for device management Storage Builder, for capacity management Storage Optimizer, for performance management Storage Allocator, for storage allocation and virtualized access control Storage Accountant, for storage usage metering and billing. These applications function individually and together to enable integrated storage resource, application capacity, and infrastructure management. 6 Capacity Management for StorageWorks NAS Servers Application Notes

Overview In particular, the Storage Builder application provides capacity monitoring, management, and reporting features that you can enable for specified HP NAS devices by following the instructions in Installing the host agent on the NAS server on page 8. More information on Storage Area Manager is available on the SAM website at: http://h18006.www1.hp.com/products/storage/software/sam/index.html. About the HP StorageWorks NAS family Network Attached Storage (NAS) servers are specialized file-serving devices that provide high-capacity support for heterogeneous files. A NAS solution provides network-accessible storage to clients and servers running different operating systems. HP offers a full range of NAS solutions that satisfy storage needs in diverse environments, from large enterprises to small and medium businesses. All HP StorageWorks NAS solutions provide scalability, continuous data availability, and high-performance block and file serving. The HP StorageWorks NAS b3000 is an entry point to NAS/SAN configurations, providing enterprise-level availability with clustered no-single-point-of-failure solutions, scalability up to 48 TB with embedded switches, and excellent performance for heterogeneous computing environments. The HP StorageWorks NAS e7000 delivers performance, scalability, and availability by providing a gateway to the enterprise SAN for file level data. The NAS e7000 connects to the industry's broadest range of SAN arrays, fusing NAS and SAN for the enterprise. The NAS 9000s and 4000s provide higher levels of storage management, data protection, performance, and print services. These models are based on the Microsoft Windows Storage Server 2003 operating system, which features quota management and file screening. The HP StorageWorks NAS 9000s delivers NAS storage with multi-protocol file support and storage management for the enterprise environment. It provides simple, rapidly deployable, and flexible storage that can be managed remotely. NAS 9000s features include Volume Shadow Copy Service for data protection and Microsoft Quota for storage usage control. The HP StorageWorks NAS 4000s provides storage management benefits similar to the NAS 9000s, but for workgroups and regional offices. For more information, refer to the NAS product documents at http://h18006.www1.hp.com/storage/networkattached.html. The rest of this document describes how to join NAS and Storage Area Manager functionality to manage capacity in NAS server configurations. Capacity Management for StorageWorks NAS Servers Application Notes 7

Installing the host agent on the NAS server Installing the host agent on the NAS server Installation prerequisites To take advantage of combined NAS and Storage Area Manager features, you must first install the Storage Area Manager host agent. In general, installing the host agent on the NAS server follows the procedures documented in the HP OpenView Storage Area Manager Installation Guide and Storage Area Manager online help. This section discusses special considerations for the host agent installation, including: Installation prerequisites, page 8 Installing the host agent software, page 9 Deleting the properties files, page 10 Launching the NAS server software, page 10 Before you install the host agent, ensure that you have the following: The Windows deployment depot installed on the Storage Area Manager management server (required for remote installation of the host agent on the NAS server) The deployment depot is part of a typical Storage Area Manager installation. Refer to the HP OpenView Storage Area Manager Installation Guide for details. Storage Area Manager v3.1 CD-ROM (required for local installation of the host agent on the NAS server) HP OpenView Storage Area Manager Installation Guide, available from http://ovweb.external.hp.com/lpe/doc_serv/ If Storage Area Manager has already discovered the NAS server and displayed it under the NAS Devices node, complete the following steps before installing the host agent: 1. Click Tools > Configure > SNMP Discovery Range and remove the NAS IP address from the SNMP discovery range. 2. Right-click the NAS entry under the NAS Devices node and delete it. Note: When a NAS server is displayed under the NAS Devices node, you can access the NAS software directly from the Storage Area Manager interface. However, after installing the host agent and configuring a NAS server as a Windows host, you must log on separately to the NAS server to use its software. For more information, see Launching the NAS server software on page 10. 8 Capacity Management for StorageWorks NAS Servers Application Notes

Installing the host agent on the NAS server Installing the host agent software Storage Area Manager provides two methods for installing the host agent: Remote installation Install the host agent remotely from the management server to each SAN host Install the host agent locally from the Storage Area Manager CD The NAS servers support both installation methods. To install the Windows host agent remotely from the Storage Area Manager management server to a NAS b3000 v2 or a NAS e7000 v2, follow the instructions in the HP OpenView Storage Area Manager Installation Guide and Storage Area Manager online help. Before remotely installing the Windows host agent from the Storage Area Manager management server to a NAS 4000s or a NAS 9000s, you must enable the Remote Registry Service, which is disabled by default on these NAS servers. The Remote Registry Service must also be enabled before updating or uninstalling the host agent remotely. To enable the Remote Registry Service on the NAS server: 1. Open the Computer Management tool on the NAS server. 2. Click Services and Applications, and then click Services. 3. Right-click Remote Registry. 4. Click Start. 5. Close Computer Management. Note: Ensure that the Remote Registry Service is enabled in all of your Windows group policies. Local lnstallation Proceed with installing the host agent software as documented in the HP OpenView Storage Area Manager Installation Guide and Storage Area Manager online help. To improve security and performance on the NAS server after remotely installing, updating, or uninstalling the host agent, HP recommends that you disable the Remote Registry Service again. To install the host agent locally on any of the supported NAS servers, use the Storage Area Manager v3.1 CD-ROM. Follow the instructions for installing the host agent locally on Windows hosts as documented in the HP OpenView Storage Area Manager Installation Guide. Capacity Management for StorageWorks NAS Servers Application Notes 9

Installing the host agent on the NAS server Deleting the properties files After installing the host agent on the NAS server, but before performing a discovery, HP recommends that you delete the NAS properties files on the Storage Area Manager management server. This precautionary measure will prevent the NAS host from appearing under both the Hosts and NAS Devices nodes. Caution: When you delete the properties files, you lose Storage Area Manager support of legacy NAS devices (b2000, b3000 v1, and e7000 v1). If you want to continue using Storage Area Manager for discovery and health monitoring of these legacy devices, you should not delete the properties files. If you choose to retain these files, you will not be able to configure the new NAS versions (b3000 v2, e7000 v2, 4000s and 9000s) as Storage Area Manager hosts. To delete the properties files: 1. On the Storage Area Manager management server, navigate to the following directory: \sanmgr\managementserver\devices\properties 2. Delete the following properties files, which correspond to the NAS servers: COMPAQ_B2000.DEF COMPAQ_B3000.DEF COMPAQ_E7000.DEF Launching the NAS server software After installing the host agent, you cannot launch the NAS server software directly from Storage Area Manager. When you want to perform NAS administration tasks, access the Web interface as follows: 1. Open a Web browser and enter the following in the address box: https://your NAS machine name or IP Address:3202/ 2. Log on with your NAS user name and password. The default user name is Administrator. The default password is hpinvent. Online help is available by clicking the Help tab on the main screen. 10 Capacity Management for StorageWorks NAS Servers Application Notes

Discovering the NAS server as a Windows host Discovering the NAS server as a Windows host If no host agent is installed on a NAS server, Storage Area Manager discovers and enters the server under the NAS Devices node. In this context, Storage Area Manager can only monitor the NAS server s health. You cannot collect complete information about NAS capacity or perform other management functions. In contrast, after installing the host agent on a NAS server and performing a discovery, Storage Area Manager enters the server under the Hosts node in the Resources tree and places it on a device topology map. Figure 2 shows the NAS server, ssd-2lq-34, as a Storage Area Manager host. The NAS device s storage capacity is now visible from both a host and a device perspective, and you can use Storage Builder to manage the NAS device s storage. Figure 2: NAS server ssd-2lq-34 in the Resources tree and device map Capacity Management for StorageWorks NAS Servers Application Notes 11

Discovering the NAS server as a Windows host Supported NAS topologies When you install the host agent on the NAS server, Storage Area Manager supports the NAS device as a host, a storage device, and a switch (if present). Storage Area Manager can discover, map, and manage most components of the NAS server in the following topologies: NAS devices with internal storage. If Storage Area Manager discovers internal storage devices that are not supported (for example, Smart Array controllers), they are entered as Unknown Devices. NAS devices with external storage, which can include combinations of HBAs, storage devices, and interconnect devices. For more information about NAS device specifications, refer to the following web sites: NAS b3000 v2: http://h18006.www1.hp.com/products/quickspecs/11339_na/11339_na.html NAS e7000 v2: http://h18006.www1.hp.com/products/quickspecs/11004_na/11004_na.html NAS 4000s: http://h18006.www1.hp.com/products/quickspecs/11830_na/11830_na.html NAS 9000s: http://h18006.www1.hp.com/products/quickspecs/11831_na/11831_na.html For more information about Storage Area Manager device support, refer to the following web site: http://turbo.rose.hp.com/spock Although Storage Area Manager supports a large number of storage devices, there are some devices that do not provide full identification information. If these devices are connected, Storage Area Manager discovers and maps them as Unknown Devices. You can associate an unknown storage device with a node on the topology map or rename the unknown device to associate it with a particular NAS device. For more information, refer to the HP OpenView Storage Area Manager Installation Guide. 12 Capacity Management for StorageWorks NAS Servers Application Notes

Discovering the NAS server as a Windows host Viewing information about the host When you select the NAS host in the Resources tree or device map, you can view capacity information collected by the host agent. Figure 3 shows the Capacity panel viewed from Storage Builder. This panel displays capacity information, data collection status, and optional reports for the NAS host. Figure 3: Storage Builder Capacity panel for NAS host Storage Builder s reports track the size of certain files and directories in the storage domain. Using file data collected from the NAS host, you can generate the following Capacity reports: Largest files The largest files on the NAS host. The list includes each file's location, owner, size, file mode, time created, and last time opened or modified. Largest directories The directories with the largest total file size on the NAS host. Total file size does not include files in subdirectories. Stale files Files on the NAS host that have not been opened in a specified number of days. Junk files Files on the NAS host that can be identified by specific characters in their names (for example,.tmp). Files/directory detailed list All files and directories on the NAS host. The report includes each file's size, owner, file mode, time created, and last time opened or modified. Using the Capacity reports with the NAS file screening capabilities gives administrators exceptional control over storage resources. See Managing capacity with Storage Builder and NAS file screening on page 16 for more information. Capacity Management for StorageWorks NAS Servers Application Notes 13

Discovering the NAS server as a Windows host Viewing information about connected devices You can display additional information for the devices connected to the NAS host. For example, Figure 4 shows the Capacity panel for the disks on the NAS host. Figure 4: Disks connected to NAS host This Capacity panel displays the disk space that is visible to the NAS host. The result is a list of all the disks/luns to which the host has a physical path. This panel displays the following information: Storage Device The name of the storage device that contains the listed LUN. HBA Name The HBA name reported by the host. Capacity Total usable LUN capacity, including used and unused space. The LUN size is reported by the storage device or host. Device File The host's primary access path to the LUN, except for Linux hosts. Storage Area Manager creates this value for Linux hosts. Hardware Path The host's logical path to the LUN. The format is OS specific. Typically, it contains the location of the HBA and ends with the Target and LUN ID. LUN id The LUN name reported by the storage device. If the device does not report a name, Storage Area Manager creates a unique LUN name. You can rename LUNs. The physical, logical, and utilization data available on the Capacity panel gives you greater control over your storage environment by letting you reclaim unused storage space, configure capacity thresholds, and set up notifications. 14 Capacity Management for StorageWorks NAS Servers Application Notes

Discovering the NAS server as a Windows host You can use Storage Area Manager s other features to gain more information from the NAS server acting as a Windows host. The next sections of this document provide examples of some of the key ways Storage Area Manager and the NAS host work together. Capacity Management for StorageWorks NAS Servers Application Notes 15

Managing capacity with Storage Builder and NAS file screening Managing capacity with Storage Builder and NAS file screening The NAS 4000s and 9000s offer a file screening feature that lets you limit or monitor files based on their extensions. By combining these file screening capabilities with the reporting features of Storage Builder you can manage your storage resources more efficiently. Note: File screening is not available on the NAS b3000 or e7000. For example, you want to determine how much storage space is consumed by unwanted media files, such as.mp3 files. To do this, you can use Storage Builder to generate a Junk Files report that collects information about.mp3 files on the NAS host. You generate this report from the Capacity panel for the NAS host (see Figure 3 on page 13). Figure 5 shows a sample Junk Files report, which indicates that the NAS server, ssd-2lq-34, has a small number of unwanted files in the E:/CZ/Music directory. Figure 5: Storage Builder Junk Files report To prevent users from storing additional.mp3 and other media files on the NAS server, use the NAS server software to set up a file screening policy (see Figure 6). For information on starting the NAS software, see Launching the NAS server software on page 10. Figure 6: NAS File Screening page 16 Capacity Management for StorageWorks NAS Servers Application Notes

Managing capacity with Storage Builder and NAS file screening After setting the policy, if a user attempts to save an.mp3 file, the NAS server displays an error message and blocks the operation (see Figure 7). Note: The message displayed is a standard Windows error indicating insufficient disk space, which might be misleading. The restriction against storing the specified files is actually the result of the NAS server s file blocking operation. Figure 7: NAS server blocking.mp3 file Refer to the NAS 4000s and 9000s Administration Guide for complete information on configuring file screening. Refer to the Storage Area Manager Administrator s Guide and Storage Area Manager online help for complete information on generating Storage Builder reports. Capacity Management for StorageWorks NAS Servers Application Notes 17

Managing consumption with Storage Builder and NAS storage quotas Managing consumption with Storage Builder and NAS storage quotas You can limit and monitor storage consumption on the NAS 4000s and 9000s servers by setting hard quotas in two ways: Disk quota Tracks and controls disk space on volumes. You can configure the volumes to prevent certain users from using disk space and to log events when users exceed their disk quotas or warning levels. Directory quota Lets you specify limits on disk space used by files in a folder and set thresholds for alarms and notifications. Note: Quota management is not available on the NAS b3000 or e7000. For example, if you use Storage Builder to run a report on the largest directories on the NAS server, ssd-2lq-34, you would discover that the Music directory from the example on page 16 exceeds 11 MB. You can generate this report from the Capacity panel for the NAS host (see Figure 3 on page 13). Figure 8 shows a portion of the Largest Directories report. Figure 8: Storage Builder Largest Directories report If you want to set a quota on the Music directory, you would next use the NAS software directory quota feature. For information on starting the NAS software, see Launching the NAS server software on page 10. In this way, Storage Builder s reporting features work with the NAS quota management to give you better control over storage space usage. Refer to the NAS 4000s and 9000s Administration Guide for complete information on configuring disk and directory quotas. Refer to the Storage Area Manager Administrator s Guide and Storage Area Manager online help for complete information on generating Storage Builder reports. 18 Capacity Management for StorageWorks NAS Servers Application Notes

Conclusion Conclusion HP supports installing the Storage Area Manager host agent software on your NAS server and using the Storage Builder application to manage storage capacity. Teaming Storage Builder s management and monitoring features with the NAS feaures of file screening and quota management allows you to Centralize and simplify capacity management and monitoring Control storage usage Reclaim wasted or unused space Boost capacity utilization ratios Predict capacity demand and plan for storage resource and hardware purchases If you are currently a Storage Area Manager user, you can begin taking advantage of these benefits right away. If you would like to add Storage Area Manager to your environment, contact your HP authorized service provider. Capacity Management for StorageWorks NAS Servers Application Notes 19