SQL Server Performance

Migrating SQL Cluster to new SAN

Discussion in 'SQL Server Clustering' started by sliu123, May 6, 2004.

  1. sliu123 New Member

    Hello, everyone:

    Have question concerning migration of an existing SQL 2000 (2-node, active/passive) Cluster to a new SAN disk array. My plan is to do the following:

    1. Existing SQL cluster environment is as follows:
    - Q: current quorum drive
    - F: current data drive
    - G: current log drive
    2. Add new drives from new SAN to the cluster using Cluster Admin
    - X: future quorom drive
    - H: future data drive
    - I: future log drive
    3. Move quorum from Q: to X: using Cluster Admin. Verify quorum is okay then remove Q:
    4. Add H: and I: drives to SQL Group in Cluster Admin
    5. Backup databases on Cluster
    6. Set SQL database offline in Cluster Admin (shutdown)
    7. Copy data from F: to H: and logs from G: to I: (old to new)
    8. Add new drives H: and I: as dependancy for SQL in Cluster Admin
    9. In disk administrator, rename F: to Y: and G: to Z: (old to vacant)
    10. In disk administrator, rename H: to F: and I: to G: (new to old)
    11. In cluster admin, rename F: to Y:, G: to Z:, H: to F:, and I: to G:
    12. Remove drives Y: and Z: dependency from SQL in Cluster Admin
    13. Start SQL (online) and hope all goes well..

    As always, I plan on testing this in the QA environment prior to actual migration in production. I know I can also detach, copy, and re-attach each database from the existing drives to the new drives instead of renaming drive letters, but I did not know if this would work for the system databases (master, msdb, model).

    Does any one have comments and/or a better way to approach this? Setting up a new SQL instance is not an option because of the number of applications and remote-users that would have to be modified.


    Shane Liu
  2. Argyle New Member

    I've not done this myself so I can't say if it's a good approach or not but it looks like it could work. I would try and find some Microsoft documentation on the subject.

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