Results 1 to 6 of 6

Thread: Time Required for 5.0 Upgrade

  1. #1
    peng1can is offline Senior Member
    Join Date
    Aug 2007
    Location
    Indianapolis
    Posts
    54
    Rep Power
    8

    Default Time Required for 5.0 Upgrade

    Anyone done an upgrade of 4.5->5.0 on a large deployment (I'm at 7500 mailboxes) and can give me a hint as to how long the upgrade will take? I've heard only that the database upgrade can take "quite a while" but can anyone say if that's 20 minutes, 2 hours, 12 hours, etc?

  2. #2
    brian is offline Project Contributor
    Join Date
    Jul 2006
    Posts
    623
    Rep Power
    10

    Default

    Internally we test upgrade timings between major versions with 10k users and 1000 mailbox items per user.

    Between 4.5.5_GA to 5.0.0_GA this test came out to about 42mins.

    Hope that helps.
    Bugzilla - Wiki - Downloads - Before posting... Search!

  3. #3
    fcash is offline Elite Member
    Join Date
    Jun 2007
    Location
    BC, Canada
    Posts
    281
    Rep Power
    8

    Default

    I think it really depends on the speed of the server, especially CPU speed, since a lot of the process is done in Java.

    Our upgrade from 5.0R C2 to 5.0 GA with only 12 users and 3 GB of mail took almost an hour. But, this is on a lowly dual-P3 1 GHz box with 4 GB RAM and only 2 80 GB HD in a software RAID1.
    Freddie

  4. #4
    brian is offline Project Contributor
    Join Date
    Jul 2006
    Posts
    623
    Rep Power
    10

    Default

    Actually the bulk of the upgrade time is usually spent in schema migrations and rebuilding the slapd indexes. These are almost exclusively IO bound processes. So faster and more disks almost always speed this up.

    The particular test was performed on a Quad 2.66 Xeon with 8GB RAM and 4 HW RAID1 volumes /opt/zimbra, /opt/zimbra/db, /opt/zimbra/index and /opt/zimbra/store.

    Certainly a Intel P3 with software raid is going to be CPU bound, but this box is probably just fine for 12 users.
    -bp
    Bugzilla - Wiki - Downloads - Before posting... Search!

  5. #5
    peng1can is offline Senior Member
    Join Date
    Aug 2007
    Location
    Indianapolis
    Posts
    54
    Rep Power
    8

    Default

    With 7500 users on an 2x dual-core Xeon w/8GB attached to a DS4400 SAN, it took us closer to 2.5 hours (including the db integrity check) for the migration (4.6 to 5.0), if anyone is interested in the data point.

  6. #6
    fcash is offline Elite Member
    Join Date
    Jun 2007
    Location
    BC, Canada
    Posts
    281
    Rep Power
    8

    Default

    Quote Originally Posted by brian View Post
    Actually the bulk of the upgrade time is usually spent in schema migrations and rebuilding the slapd indexes. These are almost exclusively IO bound processes. So faster and more disks almost always speed this up.
    That could be. I had top running in a virtual terminal during the process, and the times I looked over at it always showed a java process at >= 86% CPU. Not scientific in the least, just what I saw.

    Certainly a Intel P3 with software raid is going to be CPU bound, but this box is probably just fine for 12 users.
    -bp
    It's a temp box while we evaluate/test Zimbra. The server that will be its eventual home is a dual-Opteron box with 8 GB RAM and 12x 400 GB HD in RAID5. Zimbra will hopefully be running in a Xen VM on this box.
    Freddie

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Replies: 7
    Last Post: 10-05-2007, 03:14 PM
  2. Replies: 2
    Last Post: 10-04-2007, 03:20 PM
  3. Replies: 2
    Last Post: 07-01-2007, 11:13 AM
  4. Time mess everything up
    By Peque in forum Zimbra Connector for Outlook
    Replies: 4
    Last Post: 05-10-2007, 02:31 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •