 International Computers Limited, 2001 AXiS 20/3/2001 AXiS Trimetra User Group Glenn Fitzgerald Manager, Storage Solutions ICL High Performance Systems Storage: Beyond The TLAs

 International Computers Limited, 2001 AXiS 20/3/2001 Rapidly Changing Storage Market  Price of storage capacity decreasing 30-40% pa  Storage demand growth 100% pa  Driven by internet business applications  Customer Relationship Management (CRM)  Video/Audio/Graphics data streams  Nature of stored data shifting  Datacentre becoming storage centric  Critical data distributed  Applications growing storage-hungry  Storage Software value to exceed $10B by 2004  Increased complexity  Storage Virtualisation  Prominent vendors forming storage software arms

 International Computers Limited, 2001 AXiS 20/3/2001 New Storage Infrastructures  Changes require new storage model  Complex configurability  Application exploitation  7 X Forever availability  Network Infrastructures demanded  Storage Area Networks (SAN)  Network Attach Storage (NAS)  Complex infrastructures demand toolsets  SAN management  Storage Resource Management (SRM)

 International Computers Limited, 2001 AXiS 20/3/2001  Enterprise capabilities more and more in demand  Organisations cannot afford downtime  Backup window disappearing  Storage sales growing quickly  Storage Service Providers are an alternative  Buy storage like electricity!  Avoids management complexity and skills shortage  Raises data protection issues  Storage Solutions to meet requirements  Storage integrated across IT environment  Partnerships with best in the market  Enterprise characteristics ensured Changing Business Models

 International Computers Limited, 2001 AXiS 20/3/2001 Channel Growth is in Storage WW Storage Revenue Vs. Server Revenue Compound Annual Growth Rates 1999– % 10.7% 8.0% 10.8% 13.7% 12.2% 0%5%10%15% Direct Indirect Overall Server

 International Computers Limited, 2001 AXiS 20/3/2001 0%20%40%60%80%100% 59.7% 60.7% Direct 73.1% 81.1% Indirect 66.1% 66.5% Open SAN total NAS total WW Storage Revenue Compound Annual Growth Rates 1999–2003 Channel Growth Is in Value-Add Solutions Storage Solutions: IDC’s view

 International Computers Limited, 2001 AXiS 20/3/2001 Storage Solutions from HPS ICL High Performance Systems can offer...  a variety of storage solutions  tailored to individual customer needs  partnering with a wide range of suppliers EMC Sun Compaq IBM CA Brocade StorageTek Microsoft Fujitsu Legato VERITAS Network Appliance

 International Computers Limited, 2001 AXiS 20/3/2001 Storage Area Networks: Components VME

 International Computers Limited, 2001 AXiS 20/3/2001 Storage Area Networks: Benefits  Enhanced data availability with minimal performance impact  Automatic fail-over for increased reliability and availability  Scalability through a flexible SAN Fabric allows addition of servers and storage devices without disruption  Clear disaster-recovery plan  Improved security through SAN zoning  Lower operational costs  Simplified data management

 International Computers Limited, 2001 AXiS 20/3/ bit 64MHz Emulex LP8000 Qlogic QLA2100 QLA2200 QLA2300 2Gb

 International Computers Limited, 2001 AXiS 20/3/2001

 International Computers Limited, 2001 AXiS 20/3/2001 Switch Performance  100MB/sec full duplex (per port)  3.2 GB/sec bandwidth (16-port switch)  Non-blocking cross-bar switch  Frame cut-through port-to-port  Typical latency is 1-2 usec  Typical 6:1 fanout  Zoning for security and privacy

 International Computers Limited, 2001 AXiS 20/3/2001 Zoning

 International Computers Limited, 2001 AXiS 20/3/2001 Translative Mode allows Public devices to communicate with Private devices across the Fabric. FL_Port Translative Mode Public Private

 International Computers Limited, 2001 AXiS 20/3/2001 Physical location of Host B Physical location of Host A Phantom appearance of Host A Phantom appearance of Host B AB A B Host A and Host B are actually Fabric attached hosts. The Fabric causes Host A and Host B to appear as if they were attached to the same Private loop. From the point of view of the Private disc drives, Host A and Host B are local hosts on their Private loop. (And by the way, from the point of view of the hosts, the disc drives appear as if they were Public devices.) Private disc drives Fabric Phantom devices

 International Computers Limited, 2001 AXiS 20/3/2001 RAID Performance Some considerations  Disk spindle size - 18GB, 36GB 73GB  RAID-5 or RAID-1/0  Striping, stripe width, and stripe size  Disk array - IOPS  Disk array - data throughput  Back end data buses, e.g. FC-AL  Read / write cache size & behaviour  RAID controller CPU speed  Host network - Fibre Channel  Host server HBAs, PCI, etc.

 International Computers Limited, 2001 AXiS 20/3/2001 Performance Summary Summary  SANs are complex, but infinitely flexible  There is scalability at both architectural and component level  Total configuration can be very complex.... ....so must analyse/monitor each component  Bottlenecks can be anywhere and everywhere  Lots of scope for consultancy and professional services

 International Computers Limited, 2001 AXiS 20/3/2001 Traditional LAN based backup

 International Computers Limited, 2001 AXiS 20/3/2001 LAN free SAN based backup

 International Computers Limited, 2001 AXiS 20/3/2001 Enterprise Backup Performance MSCS Database & Application Servers (Windows) Cluster Database & Application Servers (Solaris) SAN Fabric Backup & Admin Servers Tape Library Database & Application Servers (Windows) Database & Application Servers (Solaris) Network Backup SAN Backup

 International Computers Limited, 2001 AXiS 20/3/2001 Backup performance Some considerations  Network backup or LAN-free backup?  Fast Ethernet or Gigabit?  Dedicated tape drives or shared  Sizing of backup server  Sizing of library Rule of thumb  If server has >100GB of data... ....use Gigabit network or SAN connect

 International Computers Limited, 2001 AXiS 20/3/2001 Extended Fabrics Up to 100KM Optional licence

 International Computers Limited, 2001 AXiS 20/3/2001 Remote Switch Up to 300km Optional licence

 International Computers Limited, 2001 AXiS 20/3/2001 Storage for e-Infrastructure Scalable, modular, consolidated storage Firewalls & load balancing routers ICLnet Internet Dial-up NAS (file servers) Embedded storage MSCS Database & Application Servers (Windows) Cluster Database & Application Servers (Solaris) SAN Fabric Enterprise Servers Backup & Admin Servers Tape Library Balancing Windows Solaris Stateless front-end Web servers Linux Balancing Fabric links to remote sites for split-site working

 International Computers Limited, 2001 AXiS 20/3/2001 NAS versus SAN NAS  File access over IP SAN  Block access over Fibre Channel Policy  NAS and SAN are different, but complementary, technologies  Use “NAS for clients”  Use “SAN for databases”

 International Computers Limited, 2001 AXiS 20/3/2001 NAS Performance Some considerations  Number of NAS boxes  Number of disks per box, size of disks  Disks per raidgroup, raidgroups per volume  File system size, behaviour and fragmentation  File system space for growth and for snapshots  Host behaviour - NFS & CIFS traffic  Host interface - Fast Ethernet or Gigabit?  Client performance behaviour  Network management and characteristics

 International Computers Limited, 2001 AXiS 20/3/2001 Storage Networks - future trends Trends  Consolidation of NAS and SAN storage subsystems  Convergence of SAN / NAS technologies  Cisco adoption of Fibre Channel  SCSI over IP  Convergence of IP and Fibre Channel  Growth of IP storage networking