Outage on may 23rd.

Forums › Cruncher's Corner

Anonymous
23 May 2005 15:34:16 UTC
Topic 12981
(moderation:
    )

    My mistake. The post has been corrected.

    Thank you.

    Bruce Allen
    Bruce Allen
    Joined: 15 Oct 04
    Posts: 958
    Credit: 170,849,008
    RAC: 0

    Outage on may 23rd.

    25 May 2005 4:13:11 UTC
    Message 2485
    (moderation:
      )

      Any useful estimate on how long the servers will be down?

      We expect just a few hours.

      This will (hopefully) be the last of our equipment moves. After this, the 2 UPS systems, the Einstein@Home server (and backup machine) and the Einstein@Home database server (and backup machine) will all be housed in a single unified rack.

      We're also replacing the 2-disk RAID controllers for the OS with 8 disk RAID controllers. This gives us some additional hot spares for backups.

      After this move the entire system will be 'hot swappable'. For example if there is hardware trouble on the database server, we can shut it down, pull all its disks out of RAID hot swap bays, move them into the same bays on the backup server, and boot the backup server.

      We'll post some pictures of the machines at the end of the week.

      Cheers,
      Bruce

      David Hammer
      David Hammer
      Joined: 15 Oct 04
      Posts: 144
      Credit: 82,938
      RAC: 503

      Thank you for your

      26 May 2005 4:56:46 UTC
      Message 2486
      (moderation:
        )

        Thank you for your understanding.

        The problems started about 1:00am local time just as I was about to go to bed. The last 24 hours have been very busy. Admittedly I did get some sleep. Fortunately I got a lot of help and advice from Bruce and Paul Armor who is the head sysadmin for the lsc group at uwm.

        Comment viewing options

        Select your preferred way to display the comments and click "Save settings" to activate your changes.

        Forums › Cruncher's Corner