Future technologies for storage networks. Shravan Pargal Director, Compellent Consulting

Transcription

1 Future technologies for storage networks Shravan Pargal Director, Compellent Consulting

2 Agenda Storage applications Application requirements Available technology solutions Who is winning today? What will determine the winning storage technology of tomorrow? And, NO object storage in this talk! 2

3 Storage applications Data base applications What are they used for in a business? Is it critical to a business? File and print sharing Document archiving Backup Audience question what % of storage today is storage? 3

4 Application categories 4 Business processing: Enterprise resource planning (ERP) Customer relationship management (CRM) Online transaction processing (OLTP) Batch Decision support: Data warehousing/data mart Data analysis/data mining Collaborative: Workgroup Source IDC: 2002 Application development IT infrastructure: File and print Networking Proxy caching Security Systems management Web infrastructure: Web serving Streaming media Technical - Scientific/engineering (compute only)

5 Storage market Web Infrastructure 6% Collaborative 10% Application development 10% Technical 3% Other 3% Business Processing 25% Decision support 19% IT Infrastructure 24% 5 Source IDC: 2002

6 Application requirements

7 Application requirements Focus of Databases What is the end user application? Order entry Data mining OLTP All require efficient block I/O Benchmarked using transactions per second Requirements depend on the type of data in the database and the method of access. 7

8 Latency More requirements How long are you willing to wait at the ATM machine? Availability What happens if the ATM is unable to connect to its database? What happens if a patient s allergy record is unavailable during surgery? Scalability How much storage do you have today, and how much will it be in 3 or 6 months? Does the existing storage solution scale? 8

9 Finally Does the user or administrator of the application know the answer to the following: What is the data throughput required? MB/s How important are transactions per second metrics? Input/Outputs per second 9

10 Storage architecture options

11 Architecture Options Networked Storage NAS and SAN NAS Very flexible on front end protocol options (FC, iscsi, InfiniBand available today) Currently only FC on the backend SAN FC IP» iscsi» ifcp» FCIP InfiniBand Direct attached storage SCSI ATA 11

12 Storage Virtualization In-band Out-of-band Technology Options Why is this interesting? Why is it difficult to do? What are the problems with storage virtualization? 12

13 Network Attached Storage (NAS) Clients Application Server Ethernet LAN NAS Filer Storage Server 13

14 Storage Area Network (SAN) Clients Servers Storage Disk Novell Disk Ethernet LAN Fibre Channel SAN Win 2K Tape Unix Disk 14

15 iscsi, ifcp and FCIP Protocol Stacks Applications Operating System Standard SCSI Command Set New Serial SCSI TCP FCP FC-4 TCP FCP FC-4 FC Lower Layers TCP IP IP IP iscsi ifcp FCIP Copyright 2001, Storage Networking Industry Association 15

16 Direct attached drives (DAS) IDE or SCSI Internal disk drive(s) Useful link: 16

17 Who is winning today Direct Attached Storage % of all installed storage in 2001 Network Attached Storage 7.4 % of all installed storage in 2001 Storage Area Networks 26.1 % of all installed storage in Source IDC: 2002

18 18 Installed Storage Revenue

19 19 Installed Storage Data

20 Storage Consolidation NT Servers RAID NT Servers Tape Library Tape Drive RAID ( ) LAN RAID Tape Drive Switch Switch Switch Switch SAN Mission-Critical RAID (Oracle, ERP DB) RAID Tape Drive 20

21 Interconnect Technologies Knowing that the strengths of a technology don t guarantee its success, here are some nice technologies 21

22 Fibre Channel Low Latency Immunity from congestion In-order delivery Guaranteed delivery 2 Gigabit per second pipe Dominant server to storage connection What percentage of the 2 Gb/s bandwidth is used? 22

23 IP TCP provides in-order delivery Most ethernet switches can now provide some level of immunity from congestion particularly in a LAN environment Higher layer protocols provide delivery guarantees 1 Gigabit per second bandwidth Dominant client to server connection What percentage of the bandwidth is used? 23

24 Reality check for IP Storage Fibre Channel Will not disappear any time soon Market will continue to grow and expand IP will provide a way to connect FC islands Today with FCIP, ifcp and iscsi iscsi is slowly maturing Plug Fests to test standard compliance Final specification just completed - February 2003 iscsi provides end-to-end native IP Storage 24

25 Future Network Clients Single management domain Servers Storage Disk Novell Disk There LAN is a convergence of network SAN and data administration functions Win 2K Tape Unix Disk 25

26 Trumps

27 Hidden agendas Who is backing the technology? FC FC switch and adapter incumbents Brocade, EMC, Emulex, QLogic, HDS, IBM, Sun, HP ifcp Nishan and others FCIP Cisco, Brocade and others iscsi Cisco, IBM, EMC and others Fibre Channel incumbents stand to lose as new IP based technologies gain acceptance The new players need IP based technologies to enter the storage space 27

28 Tomorrow s winners What is going to decide who the winners are? Open systems compliant Resilient Flexible deployment options Affordable as the solution scales Enables server consolidation 28

29 Better Conclusions More features what is the baseline feature-set requirement? Faster More IOPs - Not more MB/s Cheaper Commodity pricing like ethernet Easy to use Simplify! 29 The best technologies don t always triumph over other contenders remember VHS v.s. Betamax

30 Questions? Shravan Pargal Director, Compellent Consulting Compellent Technologies Inc