SmartSite's Storage Solution Requirements

See Jira: Sak-1978, sak-868 

1. High availability, 24/7 service no downtime if at all possible
2. Disaster recovery, replication to secondary site
3. Optimized for fast read/write access
   1. WebDAV
4. Needs to handle large amounts of files that greatly vary in size
5. handles distributed access
6. Archiving solution (snapshot feature)
7. Backup solution
8. Flexible file structure
   1. Compatible with JSR 170
9. DC goal is to get off of afs for r/w volumes
10. migration strategy from AFS to SAN - possibly using symlinks on app servers
11. need to be in a place to move off of AFS if we have a crisis
    1. continuous rsync needed
    2. some sort of sync match with the database
    3. short term solution for crisis prep may be different from (more ideal) long term solution
12. Cost Issues:  will OCFS2 really save us $200k and over what term?
13. Any file sharing solution must be compatible with three basic types of file locking: flock, lockf, and fcntl.

Three uses of afs for smartsite

1.     software distribution
2.     communication to My and Registrar
3.     sakai content store with r/w locking mechanisms

Needed pieces

•     san switch must have hba ports for each of app servers
•     hba switches for each of app servers
•     alternate is iscusi as link into SAN - scusi over IP

What testing is needed?

• Sakai and OCFS2 via HBA?
• Sakai access to OCFS2 via iscusi (is it possible?)
• Migration strategy?
• Continuous rsync of AFS to SAN?
  
  

Think in the long term about how this inter-relates with Virtualization Storage solutions