Storage Area Networks Back up and Management

Introduction  The Problems –Large Amounts of Data –Shared Resources –Need for interference-free back up –Replication Flood –Archival of data –Retrieval of state data

SAN Basics  Storage Area Network –Wires  Fibre Channel (focus)  iSCSI  Platforms  Applications

Platforms –MS Windows Server families (2000, NT, 2003) –Sun Solaris versions 2.6 through 2.8 –HP-UX version 10.2 and higher –IBM AIX version 4.2 and higher –Compaq Tru64 Unix version 4.0F and higher –Compaq Open VMS version 7.2 and higher –Novell Netware version 4.11 and higher –SGI IRIX version 6.5 and higher –Sequent DYNIX version 4.5 and above –IBM OS/390 Mainframe MVS, or Z/OS –LINUX

SAN Required Applications –IBM HACMP (cluster) –Solaris Cluster 3.0 (cluster) –Compaq/HP TruCluster (cluster) –Oracle Failsafe Cluster (cluster) –Oracle Real Application Clusters (cluster) –Microsoft Cluster Server (MSCS) (cluster) –HP MC/Serviceguard Clusters (cluster) –Novell Netware Cluster Services (cluster) –Veritas NetBackup (backup application) –Veritas Backup Exec Enterprise Edition (backup application) –Computer Associates ARCserve with SLO option (backup application) –Computer Associates ARCserveIT (backup application) –Legato NetWorker (backup application) –CommVault (backup application)

Candidates  Any system w/ 16+ Servers  Systems w/ Large Databases (<16 servers)  Non-candidates –Web Servers –All PCs –Less than 10 GB Storage –Any that don’t require fast access to data

Justification  Why use a SAN? –Reduce system administration time –Reduction of traffic on LAN –Fast access (approach speed of light)

Topologies

Path Management  Something has to track all of these paths  Path Management Software –Chooses paths based on traffic flow and availability –Can be customized to restrict from specific edges (policy-based)

Hardware  Host Bus Adapter (HBA)  Gigabit Interface Converter –Short Wave –Long Wave (up to 100 KM)  Host Bus Adapter Drivers  Cables  SAN hubs, switches, & routers  Storage

SAN Manager Software  Datacore SANSymphony Example –Cost  How do you think vendors price this software?

SAN Manager Software  Datacore SANSymphony Example –Cost  How do you think vendors price this software?  By how much it manages –Ex. $30k base + $4k / terabyte –Requires dedicated server as intermediary

SAN Manager Software  Features –QoS  Class of Service restrict b/w - priority based  Load balancing –Backup: Asynchonous IP Mirroring (AIM) –Data Mirroring –Disc Allocation –  Dynamic JIT Allocation  Unused space remains in a global pool

Tie it Together  SAN incorporated  Incremental Update & Backup  Restrict lesser priority access –Lower primary at failover –Raise backup at failover –Low QoS to partners during high traffic periods & failover  Maintain state locally & stored for quick recovery

Final Thoughts & Questions  Your questions?