Slow restore times

davidbanner2kdavidbanner2k Posts: 14
edited March 25, 2011 9:56AM in SQL Backup Previous Versions
We have 2 identical servers (DR & Viewonly), both restore the same db files copied down from production daily. Over the past 2 years, one server (DR) has consistenly restored the database in 1/4 of the time as the other (ViewOnly). The ONLY difference is the name of the database in DR is the same as production whereas VIewOnly restores to a different db name.

Is it possible the different database name is slowing down the restore process?

Logs:
DR
3/13/2011 7:55:25 PM: RESTORE DATABASE successfully processed 51800589 pages in 2118.718 seconds (200.286 MB/sec).

DR - almost a year ago
5/9/2010 3:59:47 AM: RESTORE DATABASE successfully processed 38458043 pages in 1479.035 seconds (213.009 MB/sec).

View only - today
3/15/2011 8:56:28 AM: RESTORE DATABASE successfully processed 49144879 pages in 13278.791 seconds (30.318 MB/sec).

View only - 1 year ago
3/15/2010 RESTORE DATABASE successfully processed 64603668 pages in 10756.321 seconds (49.202 MB/sec).

View only - 2 years ago
3/16/2009 RESTORE DATABASE successfully processed 39596151 pages in 6596.895 seconds (49.170 MB/sec).
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Comments

  • peteypetey Posts: 2,358 New member
    The database name shouldn't be a factor in the restore process speed.

    If you ran RESTORE VERIFYONLY on the same file on both servers, is the duration also different?

    Thanks.
    Peter Yeoh
    SQL Backup Consultant Developer
    Associate, Yohz Software
    Beyond compression - SQL Backup goodies under the hood, updated for version 8
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  • davidbanner2kdavidbanner2k Posts: 14
    Thanks Peter, I will give this a try and let you know results.
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  • davidbanner2kdavidbanner2k Posts: 14
    Rebuild the database with same name and tried verifyonly method. Still no luck.
    Any other ideas?
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  • peteypetey Posts: 2,358 New member
    Are you saying that verifying the backups on the read-only server is still significantly slower than on the disaster recovery server? Are the 2 servers identical in their hardware configuration, especially their CPU and disk configurations?
    Peter Yeoh
    SQL Backup Consultant Developer
    Associate, Yohz Software
    Beyond compression - SQL Backup goodies under the hood, updated for version 8
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  • davidbanner2kdavidbanner2k Posts: 14
    yes.
    The servers are identical in terms of memory/cpu/OS. They are both using SAN, the only difference being letters/labels because the storage team didn't configure identical. But the mdf/ldf/ndf files are allocated across in the same manner. I do have an open ticket with the SAN team to do a health check, pending analysis right now.
    Thanks again.
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