September 11, 2012 at 9:05 am
Sunday night, our core SAP instance database backup took almost 8 hours to run, normally it runs in under four hours. Last night it ran about 15 minutes longer. How do I begin troubleshooting this? Nothing changed on this server, anywhere, or on the SAN that it is connected to.
September 11, 2012 at 9:39 am
Well, there's not enough information here to give anything but generic troubleshooting advice, but I'd start by:
1) Throwing out the idea that nothing's changed, it has.
2) Check the following areas (not exhaustive):
Has the database size increased? Check the backup sizes from the msdb backup history tables over a few weeks to see if there's been a significant increase
Have the backup options changed?
Location of backups, compression options etc. - all available from the backup history tables
Is it backing up locally, or to a network location?
If locally, you'll need some historic monitoring of I/O and server activity during the backup. Also SAN level monitoring to see if your SAN was under pressure from other activity external to that server.
If network, then you need historic stats from the network layer or to set some up for the next backup, plus doing the same I/O monitoring for the server/SAN hosting the network location as for the local SQL Server.
If you have SQL 2008 (Enterprise Edition only) or SQL 2008 R2+ (Standard or higher), if you're not already using backup compression, I find it can massively reduce backup time (obviously at the expense of some CPU)
September 11, 2012 at 9:56 am
Has the database size increased? Check the backup sizes from the msdb backup history tables over a few weeks to see if there's been a significant increase
--> No dramatic increase. We grow 150 gigs a month but this would be a gradual increase, not an overnight increase in duration...
Have the backup options changed?
Location of backups, compression options etc. - all available from the backup history tables
--> Nothing changed there.
Is it backing up locally, or to a network location?
--> SAN. Nothing has changed on there, unless we have a ton of drives going bad.
If locally, you'll need some historic monitoring of I/O and server activity during the backup. Also SAN level monitoring to see if your SAN was under pressure from other activity external to that server.
--> Will look into perfmon. I assume a SAN healthcheck is in order?
If network, then you need historic stats from the network layer or to set some up for the next backup, plus doing the same I/O monitoring for the server/SAN hosting the network location as for the local SQL Server.
--> Maybe the fiber channel connectivity to the SAN is worth looking into?
If you have SQL 2008 (Enterprise Edition only) or SQL 2008 R2+ (Standard or higher), if you're not already using backup compression, I find it can massively reduce backup time (obviously at the expense of some CPU)
--> Compression is set default on the server and has not changed.
September 11, 2012 at 10:21 am
San health check sounds sensible.
Mind posting the results of the below query? (run against the SAP database)
SELECT
s.database_name,
m.physical_device_name,
CAST(CAST(s.backup_size / 1024.0/1024.0/1024.0 AS INT) AS VARCHAR(14)) + ' ' + 'GB' AS Backup_Size,
CAST(CAST(s.compressed_backup_size / 1024.0/1024.0/1024.0 AS INT) AS VARCHAR(14)) + ' ' + 'GB' AS Compressed_Backup_Size,
CAST(s.backup_size/ 1024.0/1024.0/DATEDIFF(SECOND,s.backup_start_date,s.backup_finish_date) AS INT) AS [Uncompressed_Throughput_MB/s],
CAST(s.compressed_backup_size/ 1024.0/1024.0/DATEDIFF(SECOND,s.backup_start_date,s.backup_finish_date) AS INT) AS [Compressed_Throughput_MB/s],
DATEDIFF(minute, s.backup_start_date,s.backup_finish_date) Elapsed_Backup_Time_Minutes,
s.backup_start_date,
s.recovery_model
FROM msdb.dbo.backupset s
INNER JOIN msdb.dbo.backupmediafamily m ON s.media_set_id = m.media_set_id
WHERE s.database_name = DB_NAME()
AND s.type='D'
ORDER BY backup_start_date DESC, backup_finish_date
September 11, 2012 at 10:24 am
Results:
database_namephysical_device_nameBackup_SizeCompressed_Backup_SizeUncompressed_Throughput_MB/sCompressed_Throughput_MB/sElapsed_Backup_Time_Minutesbackup_start_daterecovery_model
PRDU:\PRD_Backup\PRD1.bak4421 GB781 GB187334022012-09-10 18:20:13.000FULL
PRDU:\PRD_Backup\PRD2.bak4421 GB781 GB187334022012-09-10 18:20:13.000FULL
PRDU:\PRD_Backup\PRD3.bak4421 GB781 GB187334022012-09-10 18:20:13.000FULL
PRDU:\PRD_Backup\PRD4.bak4421 GB781 GB187334022012-09-10 18:20:13.000FULL
PRDU:\PRD_Backup\PRD5.bak4421 GB781 GB187334022012-09-10 18:20:13.000FULL
PRDU:\PRD_Backup\PRD6.bak4421 GB781 GB187334022012-09-10 18:20:13.000FULL
PRDU:\PRD_Backup\PRD1.bak4411 GB777 GB189333972012-09-09 18:20:10.000FULL
PRDU:\PRD_Backup\PRD2.bak4411 GB777 GB189333972012-09-09 18:20:10.000FULL
PRDU:\PRD_Backup\PRD3.bak4411 GB777 GB189333972012-09-09 18:20:10.000FULL
PRDU:\PRD_Backup\PRD4.bak4411 GB777 GB189333972012-09-09 18:20:10.000FULL
PRDU:\PRD_Backup\PRD5.bak4411 GB777 GB189333972012-09-09 18:20:10.000FULL
PRDU:\PRD_Backup\PRD6.bak4411 GB777 GB189333972012-09-09 18:20:10.000FULL
PRDU:\PRD_Backup\PRD1.bak4411 GB777 GB484851562012-09-08 23:21:38.000FULL
PRDU:\PRD_Backup\PRD2.bak4411 GB777 GB484851562012-09-08 23:21:38.000FULL
PRDU:\PRD_Backup\PRD3.bak4411 GB777 GB484851562012-09-08 23:21:38.000FULL
PRDU:\PRD_Backup\PRD4.bak4411 GB777 GB484851562012-09-08 23:21:38.000FULL
PRDU:\PRD_Backup\PRD5.bak4411 GB777 GB484851562012-09-08 23:21:38.000FULL
PRDU:\PRD_Backup\PRD6.bak4411 GB777 GB484851562012-09-08 23:21:38.000FULL
PRDU:\PRD_Backup\PRD1.bak4406 GB777 GB370652032012-09-07 18:20:15.000FULL
PRDU:\PRD_Backup\PRD2.bak4406 GB777 GB370652032012-09-07 18:20:15.000FULL
PRDU:\PRD_Backup\PRD3.bak4406 GB777 GB370652032012-09-07 18:20:15.000FULL
PRDU:\PRD_Backup\PRD4.bak4406 GB777 GB370652032012-09-07 18:20:15.000FULL
PRDU:\PRD_Backup\PRD5.bak4406 GB777 GB370652032012-09-07 18:20:15.000FULL
PRDU:\PRD_Backup\PRD6.bak4406 GB777 GB370652032012-09-07 18:20:15.000FULL
PRDU:\PRD_Backup\PRD1.bak4402 GB777 GB442781702012-09-06 18:20:23.000FULL
PRDU:\PRD_Backup\PRD2.bak4402 GB777 GB442781702012-09-06 18:20:23.000FULL
PRDU:\PRD_Backup\PRD3.bak4402 GB777 GB442781702012-09-06 18:20:23.000FULL
PRDU:\PRD_Backup\PRD4.bak4402 GB777 GB442781702012-09-06 18:20:23.000FULL
PRDU:\PRD_Backup\PRD5.bak4402 GB777 GB442781702012-09-06 18:20:23.000FULL
PRDU:\PRD_Backup\PRD6.bak4402 GB777 GB442781702012-09-06 18:20:23.000FULL
PRDU:\PRD_Backup\PRD1.bak4396 GB776 GB366642052012-09-05 18:20:27.000FULL
PRDU:\PRD_Backup\PRD2.bak4396 GB776 GB366642052012-09-05 18:20:27.000FULL
PRDU:\PRD_Backup\PRD3.bak4396 GB776 GB366642052012-09-05 18:20:27.000FULL
PRDU:\PRD_Backup\PRD4.bak4396 GB776 GB366642052012-09-05 18:20:27.000FULL
PRDU:\PRD_Backup\PRD5.bak4396 GB776 GB366642052012-09-05 18:20:27.000FULL
PRDU:\PRD_Backup\PRD6.bak4396 GB776 GB366642052012-09-05 18:20:27.000FULL
PRDU:\PRD_Backup\PRD1.bak4386 GB774 GB386681942012-09-04 18:20:24.000FULL
PRDU:\PRD_Backup\PRD2.bak4386 GB774 GB386681942012-09-04 18:20:24.000FULL
PRDU:\PRD_Backup\PRD3.bak4386 GB774 GB386681942012-09-04 18:20:24.000FULL
PRDU:\PRD_Backup\PRD4.bak4386 GB774 GB386681942012-09-04 18:20:24.000FULL
PRDU:\PRD_Backup\PRD5.bak4386 GB774 GB386681942012-09-04 18:20:24.000FULL
PRDU:\PRD_Backup\PRD6.bak4386 GB774 GB386681942012-09-04 18:20:24.000FULL
PRDU:\PRD_Backup\PRD1.bak4378 GB772 GB383671952012-09-03 18:20:24.000FULL
PRDU:\PRD_Backup\PRD2.bak4378 GB772 GB383671952012-09-03 18:20:24.000FULL
PRDU:\PRD_Backup\PRD3.bak4378 GB772 GB383671952012-09-03 18:20:24.000FULL
PRDU:\PRD_Backup\PRD4.bak4378 GB772 GB383671952012-09-03 18:20:24.000FULL
PRDU:\PRD_Backup\PRD5.bak4378 GB772 GB383671952012-09-03 18:20:24.000FULL
PRDU:\PRD_Backup\PRD6.bak4378 GB772 GB383671952012-09-03 18:20:24.000FULL
PRDU:\PRD_Backup\PRD1.bak4376 GB771 GB395691892012-09-02 18:20:24.000FULL
PRDU:\PRD_Backup\PRD2.bak4376 GB771 GB395691892012-09-02 18:20:24.000FULL
PRDU:\PRD_Backup\PRD3.bak4376 GB771 GB395691892012-09-02 18:20:24.000FULL
PRDU:\PRD_Backup\PRD4.bak4376 GB771 GB395691892012-09-02 18:20:24.000FULL
PRDU:\PRD_Backup\PRD5.bak4376 GB771 GB395691892012-09-02 18:20:24.000FULL
PRDU:\PRD_Backup\PRD6.bak4376 GB771 GB395691892012-09-02 18:20:24.000FULL
PRDU:\PRD_Backup\PRD1.bak4374 GB771 GB435761712012-09-01 18:20:22.000FULL
PRDU:\PRD_Backup\PRD2.bak4374 GB771 GB435761712012-09-01 18:20:22.000FULL
PRDU:\PRD_Backup\PRD3.bak4374 GB771 GB435761712012-09-01 18:20:22.000FULL
PRDU:\PRD_Backup\PRD4.bak4374 GB771 GB435761712012-09-01 18:20:22.000FULL
PRDU:\PRD_Backup\PRD5.bak4374 GB771 GB435761712012-09-01 18:20:22.000FULL
PRDU:\PRD_Backup\PRD6.bak4374 GB771 GB435761712012-09-01 18:20:22.000FULL
PRDU:\PRD_Backup\PRD1.bak4374 GB772 GB347612142012-08-31 18:20:22.000FULL
PRDU:\PRD_Backup\PRD2.bak4374 GB772 GB347612142012-08-31 18:20:22.000FULL
PRDU:\PRD_Backup\PRD3.bak4374 GB772 GB347612142012-08-31 18:20:22.000FULL
PRDU:\PRD_Backup\PRD4.bak4374 GB772 GB347612142012-08-31 18:20:22.000FULL
PRDU:\PRD_Backup\PRD5.bak4374 GB772 GB347612142012-08-31 18:20:22.000FULL
PRDU:\PRD_Backup\PRD6.bak4374 GB772 GB347612142012-08-31 18:20:22.000FULL
PRDU:\PRD_Backup\PRD1.bak4367 GB771 GB389681912012-08-30 18:20:22.000FULL
PRDU:\PRD_Backup\PRD2.bak4367 GB771 GB389681912012-08-30 18:20:22.000FULL
PRDU:\PRD_Backup\PRD3.bak4367 GB771 GB389681912012-08-30 18:20:22.000FULL
PRDU:\PRD_Backup\PRD4.bak4367 GB771 GB389681912012-08-30 18:20:22.000FULL
PRDU:\PRD_Backup\PRD5.bak4367 GB771 GB389681912012-08-30 18:20:22.000FULL
PRDU:\PRD_Backup\PRD6.bak4367 GB771 GB389681912012-08-30 18:20:22.000FULL
PRDU:\PRD_Backup\PRD1.bak4358 GB769 GB391691902012-08-29 18:20:20.000FULL
PRDU:\PRD_Backup\PRD2.bak4358 GB769 GB391691902012-08-29 18:20:20.000FULL
PRDU:\PRD_Backup\PRD3.bak4358 GB769 GB391691902012-08-29 18:20:20.000FULL
PRDU:\PRD_Backup\PRD4.bak4358 GB769 GB391691902012-08-29 18:20:20.000FULL
PRDU:\PRD_Backup\PRD5.bak4358 GB769 GB391691902012-08-29 18:20:20.000FULL
PRDU:\PRD_Backup\PRD6.bak4358 GB769 GB391691902012-08-29 18:20:20.000FULL
PRDU:\PRD_Backup\PRD1.bak4351 GB768 GB369652012012-08-28 18:20:23.000FULL
PRDU:\PRD_Backup\PRD2.bak4351 GB768 GB369652012012-08-28 18:20:23.000FULL
PRDU:\PRD_Backup\PRD3.bak4351 GB768 GB369652012012-08-28 18:20:23.000FULL
PRDU:\PRD_Backup\PRD4.bak4351 GB768 GB369652012012-08-28 18:20:23.000FULL
PRDU:\PRD_Backup\PRD5.bak4351 GB768 GB369652012012-08-28 18:20:23.000FULL
PRDU:\PRD_Backup\PRD6.bak4351 GB768 GB369652012012-08-28 18:20:23.000FULL
PRDU:\PRD_Backup\PRD1.bak4341 GB766 GB387681912012-08-27 18:20:22.000FULL
PRDU:\PRD_Backup\PRD2.bak4341 GB766 GB387681912012-08-27 18:20:22.000FULL
PRDU:\PRD_Backup\PRD3.bak4341 GB766 GB387681912012-08-27 18:20:22.000FULL
PRDU:\PRD_Backup\PRD4.bak4341 GB766 GB387681912012-08-27 18:20:22.000FULL
PRDU:\PRD_Backup\PRD5.bak4341 GB766 GB387681912012-08-27 18:20:22.000FULL
PRDU:\PRD_Backup\PRD6.bak4341 GB766 GB387681912012-08-27 18:20:22.000FULL
PRDU:\PRD_Backup\PRD1.bak4335 GB764 GB393691882012-08-26 18:20:24.000FULL
PRDU:\PRD_Backup\PRD2.bak4335 GB764 GB393691882012-08-26 18:20:24.000FULL
PRDU:\PRD_Backup\PRD3.bak4335 GB764 GB393691882012-08-26 18:20:24.000FULL
PRDU:\PRD_Backup\PRD4.bak4335 GB764 GB393691882012-08-26 18:20:24.000FULL
PRDU:\PRD_Backup\PRD5.bak4335 GB764 GB393691882012-08-26 18:20:24.000FULL
PRDU:\PRD_Backup\PRD6.bak4335 GB764 GB393691882012-08-26 18:20:24.000FULL
PRDU:\PRD_Backup\PRD1.bak4336 GB765 GB370652002012-08-25 18:20:24.000FULL
PRDU:\PRD_Backup\PRD2.bak4336 GB765 GB370652002012-08-25 18:20:24.000FULL
PRDU:\PRD_Backup\PRD3.bak4336 GB765 GB370652002012-08-25 18:20:24.000FULL
PRDU:\PRD_Backup\PRD4.bak4336 GB765 GB370652002012-08-25 18:20:24.000FULL
PRDU:\PRD_Backup\PRD5.bak4336 GB765 GB370652002012-08-25 18:20:24.000FULL
PRDU:\PRD_Backup\PRD6.bak4336 GB765 GB370652002012-08-25 18:20:24.000FULL
PRDU:\PRD_Backup\PRD1.bak4336 GB765 GB357632072012-08-24 18:20:22.000FULL
PRDU:\PRD_Backup\PRD2.bak4336 GB765 GB357632072012-08-24 18:20:22.000FULL
PRDU:\PRD_Backup\PRD3.bak4336 GB765 GB357632072012-08-24 18:20:22.000FULL
PRDU:\PRD_Backup\PRD4.bak4336 GB765 GB357632072012-08-24 18:20:22.000FULL
PRDU:\PRD_Backup\PRD5.bak4336 GB765 GB357632072012-08-24 18:20:22.000FULL
PRDU:\PRD_Backup\PRD6.bak4336 GB765 GB357632072012-08-24 18:20:22.000FULL
PRDU:\PRD_Backup\PRD1.bak4335 GB765 GB434761702012-08-23 21:03:15.000FULL
PRDU:\PRD_Backup\PRD2.bak4335 GB765 GB434761702012-08-23 21:03:15.000FULL
PRDU:\PRD_Backup\PRD3.bak4335 GB765 GB434761702012-08-23 21:03:15.000FULL
PRDU:\PRD_Backup\PRD4.bak4335 GB765 GB434761702012-08-23 21:03:15.000FULL
PRDU:\PRD_Backup\PRD5.bak4335 GB765 GB434761702012-08-23 21:03:15.000FULL
PRDU:\PRD_Backup\PRD6.bak4335 GB765 GB434761702012-08-23 21:03:15.000FULL
PRDU:\PRD_Backup\PRD1.bak4329 GB765 GB379671952012-08-22 18:20:21.000FULL
PRDU:\PRD_Backup\PRD2.bak4329 GB765 GB379671952012-08-22 18:20:21.000FULL
PRDU:\PRD_Backup\PRD3.bak4329 GB765 GB379671952012-08-22 18:20:21.000FULL
PRDU:\PRD_Backup\PRD4.bak4329 GB765 GB379671952012-08-22 18:20:21.000FULL
PRDU:\PRD_Backup\PRD5.bak4329 GB765 GB379671952012-08-22 18:20:21.000FULL
PRDU:\PRD_Backup\PRD6.bak4329 GB765 GB379671952012-08-22 18:20:21.000FULL
PRDU:\PRD_Backup\PRD1.bak4321 GB763 GB391691882012-08-21 18:20:21.000FULL
PRDU:\PRD_Backup\PRD2.bak4321 GB763 GB391691882012-08-21 18:20:21.000FULL
PRDU:\PRD_Backup\PRD3.bak4321 GB763 GB391691882012-08-21 18:20:21.000FULL
PRDU:\PRD_Backup\PRD4.bak4321 GB763 GB391691882012-08-21 18:20:21.000FULL
PRDU:\PRD_Backup\PRD5.bak4321 GB763 GB391691882012-08-21 18:20:21.000FULL
PRDU:\PRD_Backup\PRD6.bak4321 GB763 GB391691882012-08-21 18:20:21.000FULL
PRDU:\PRD_Backup\PRD1.bak4314 GB762 GB378661942012-08-20 18:20:24.000FULL
PRDU:\PRD_Backup\PRD2.bak4314 GB762 GB378661942012-08-20 18:20:24.000FULL
PRDU:\PRD_Backup\PRD3.bak4314 GB762 GB378661942012-08-20 18:20:24.000FULL
PRDU:\PRD_Backup\PRD4.bak4314 GB762 GB378661942012-08-20 18:20:24.000FULL
PRDU:\PRD_Backup\PRD5.bak4314 GB762 GB378661942012-08-20 18:20:24.000FULL
PRDU:\PRD_Backup\PRD6.bak4314 GB762 GB378661942012-08-20 18:20:24.000FULL
PRDU:\PRD_Backup\PRD1.bak4308 GB760 GB401701832012-08-19 18:20:23.000FULL
PRDU:\PRD_Backup\PRD2.bak4308 GB760 GB401701832012-08-19 18:20:23.000FULL
PRDU:\PRD_Backup\PRD3.bak4308 GB760 GB401701832012-08-19 18:20:23.000FULL
PRDU:\PRD_Backup\PRD4.bak4308 GB760 GB401701832012-08-19 18:20:23.000FULL
PRDU:\PRD_Backup\PRD5.bak4308 GB760 GB401701832012-08-19 18:20:23.000FULL
PRDU:\PRD_Backup\PRD6.bak4308 GB760 GB401701832012-08-19 18:20:23.000FULL
PRDU:\PRD_Backup\PRD1.bak4309 GB760 GB365642012012-08-18 18:20:24.000FULL
PRDU:\PRD_Backup\PRD2.bak4309 GB760 GB365642012012-08-18 18:20:24.000FULL
PRDU:\PRD_Backup\PRD3.bak4309 GB760 GB365642012012-08-18 18:20:24.000FULL
PRDU:\PRD_Backup\PRD4.bak4309 GB760 GB365642012012-08-18 18:20:24.000FULL
PRDU:\PRD_Backup\PRD5.bak4309 GB760 GB365642012012-08-18 18:20:24.000FULL
PRDU:\PRD_Backup\PRD6.bak4309 GB760 GB365642012012-08-18 18:20:24.000FULL
PRDU:\PRD_Backup\PRD1.bak4309 GB760 GB357632052012-08-17 18:20:22.000FULL
PRDU:\PRD_Backup\PRD2.bak4309 GB760 GB357632052012-08-17 18:20:22.000FULL
PRDU:\PRD_Backup\PRD3.bak4309 GB760 GB357632052012-08-17 18:20:22.000FULL
PRDU:\PRD_Backup\PRD4.bak4309 GB760 GB357632052012-08-17 18:20:22.000FULL
PRDU:\PRD_Backup\PRD5.bak4309 GB760 GB357632052012-08-17 18:20:22.000FULL
PRDU:\PRD_Backup\PRD6.bak4309 GB760 GB357632052012-08-17 18:20:22.000FULL
PRDU:\PRD_Backup\PRD1.bak4310 GB761 GB428751712012-08-16 20:54:25.000FULL
PRDU:\PRD_Backup\PRD2.bak4310 GB761 GB428751712012-08-16 20:54:25.000FULL
PRDU:\PRD_Backup\PRD3.bak4310 GB761 GB428751712012-08-16 20:54:25.000FULL
PRDU:\PRD_Backup\PRD4.bak4310 GB761 GB428751712012-08-16 20:54:25.000FULL
PRDU:\PRD_Backup\PRD5.bak4310 GB761 GB428751712012-08-16 20:54:25.000FULL
PRDU:\PRD_Backup\PRD6.bak4310 GB761 GB428751712012-08-16 20:54:25.000FULL
PRDU:\PRD_Backup\PRD1.bak4302 GB760 GB382671922012-08-15 18:20:20.000FULL
PRDU:\PRD_Backup\PRD2.bak4302 GB760 GB382671922012-08-15 18:20:20.000FULL
PRDU:\PRD_Backup\PRD3.bak4302 GB760 GB382671922012-08-15 18:20:20.000FULL
PRDU:\PRD_Backup\PRD4.bak4302 GB760 GB382671922012-08-15 18:20:20.000FULL
PRDU:\PRD_Backup\PRD5.bak4302 GB760 GB382671922012-08-15 18:20:20.000FULL
PRDU:\PRD_Backup\PRD6.bak4302 GB760 GB382671922012-08-15 18:20:20.000FULL
PRDU:\PRD_Backup\PRD1.bak4295 GB758 GB427751712012-08-14 18:20:22.000FULL
PRDU:\PRD_Backup\PRD2.bak4295 GB758 GB427751712012-08-14 18:20:22.000FULL
PRDU:\PRD_Backup\PRD3.bak4295 GB758 GB427751712012-08-14 18:20:22.000FULL
PRDU:\PRD_Backup\PRD4.bak4295 GB758 GB427751712012-08-14 18:20:22.000FULL
PRDU:\PRD_Backup\PRD5.bak4295 GB758 GB427751712012-08-14 18:20:22.000FULL
PRDU:\PRD_Backup\PRD6.bak4295 GB758 GB427751712012-08-14 18:20:22.000FULL
PRDU:\PRD_Backup\PRD1.bak4288 GB757 GB468821562012-08-13 18:20:24.000FULL
PRDU:\PRD_Backup\PRD2.bak4288 GB757 GB468821562012-08-13 18:20:24.000FULL
PRDU:\PRD_Backup\PRD3.bak4288 GB757 GB468821562012-08-13 18:20:24.000FULL
PRDU:\PRD_Backup\PRD4.bak4288 GB757 GB468821562012-08-13 18:20:24.000FULL
PRDU:\PRD_Backup\PRD5.bak4288 GB757 GB468821562012-08-13 18:20:24.000FULL
PRDU:\PRD_Backup\PRD6.bak4288 GB757 GB468821562012-08-13 18:20:24.000FULL
PRDU:\PRD_Backup\PRD1.bak4283 GB755 GB393691862012-08-12 18:20:23.000FULL
PRDU:\PRD_Backup\PRD2.bak4283 GB755 GB393691862012-08-12 18:20:23.000FULL
PRDU:\PRD_Backup\PRD3.bak4283 GB755 GB393691862012-08-12 18:20:23.000FULL
PRDU:\PRD_Backup\PRD4.bak4283 GB755 GB393691862012-08-12 18:20:23.000FULL
PRDU:\PRD_Backup\PRD5.bak4283 GB755 GB393691862012-08-12 18:20:23.000FULL
PRDU:\PRD_Backup\PRD6.bak4283 GB755 GB393691862012-08-12 18:20:23.000FULL
PRDU:\PRD_Backup\PRD1.bak4284 GB756 GB397701842012-08-11 18:20:26.000FULL
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PRDU:\PRD_Backup\PRD3.bak4111 GB727 GB380671842012-07-05 18:20:21.000FULL
PRDU:\PRD_Backup\PRD4.bak4111 GB727 GB380671842012-07-05 18:20:21.000FULL
PRDU:\PRD_Backup\PRD5.bak4111 GB727 GB380671842012-07-05 18:20:21.000FULL
PRDU:\PRD_Backup\PRD6.bak4111 GB727 GB380671842012-07-05 18:20:21.000FULL
PRDU:\PRD_Backup\PRD1.bak4104 GB725 GB388681802012-07-04 18:20:24.000FULL
PRDU:\PRD_Backup\PRD2.bak4104 GB725 GB388681802012-07-04 18:20:24.000FULL
PRDU:\PRD_Backup\PRD3.bak4104 GB725 GB388681802012-07-04 18:20:24.000FULL
PRDU:\PRD_Backup\PRD4.bak4104 GB725 GB388681802012-07-04 18:20:24.000FULL
PRDU:\PRD_Backup\PRD5.bak4104 GB725 GB388681802012-07-04 18:20:24.000FULL
PRDU:\PRD_Backup\PRD6.bak4104 GB725 GB388681802012-07-04 18:20:24.000FULL
PRDU:\PRD_Backup\PRD1.bak4101 GB725 GB385681822012-07-03 18:20:26.000FULL
PRDU:\PRD_Backup\PRD2.bak4101 GB725 GB385681822012-07-03 18:20:26.000FULL
PRDU:\PRD_Backup\PRD3.bak4101 GB725 GB385681822012-07-03 18:20:26.000FULL
PRDU:\PRD_Backup\PRD4.bak4101 GB725 GB385681822012-07-03 18:20:26.000FULL
PRDU:\PRD_Backup\PRD5.bak4101 GB725 GB385681822012-07-03 18:20:26.000FULL
PRDU:\PRD_Backup\PRD6.bak4101 GB725 GB385681822012-07-03 18:20:26.000FULL
PRDU:\PRD_Backup\PRD1.bak4093 GB724 GB397701762012-07-02 18:20:24.000FULL
PRDU:\PRD_Backup\PRD2.bak4093 GB724 GB397701762012-07-02 18:20:24.000FULL
PRDU:\PRD_Backup\PRD3.bak4093 GB724 GB397701762012-07-02 18:20:24.000FULL
PRDU:\PRD_Backup\PRD4.bak4093 GB724 GB397701762012-07-02 18:20:24.000FULL
PRDU:\PRD_Backup\PRD5.bak4093 GB724 GB397701762012-07-02 18:20:24.000FULL
PRDU:\PRD_Backup\PRD6.bak4093 GB724 GB397701762012-07-02 18:20:24.000FULL
PRDU:\PRD_Backup\PRD1.bak4088 GB723 GB399701752012-07-01 18:20:25.000FULL
PRDU:\PRD_Backup\PRD2.bak4088 GB723 GB399701752012-07-01 18:20:25.000FULL
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PRDU:\PRD_Backup\PRD4.bak4088 GB723 GB399701752012-07-01 18:20:25.000FULL
PRDU:\PRD_Backup\PRD5.bak4088 GB723 GB399701752012-07-01 18:20:25.000FULL
PRDU:\PRD_Backup\PRD6.bak4088 GB723 GB399701752012-07-01 18:20:25.000FULL
September 11, 2012 at 10:44 am
Yikes, lots of data there - could you edit that and remove all but the top couple of hundred rows or so as it's going to be very slow to load the thread? It's duplicating data as you've got multiple files per set, but your average throughput has gone down from 65-85MB/s to 33MB/s when you look at the last few backups, but actually, if you look back further, you had similar slow timings for your backups between 27th July and 3rd August, which makes me think this is likely to be I/O contention at the time the backup job runs rather than a hardware issue. This would also make sense as to why it was much faster when it was run outside of its normal schedule on the 8th (presumably there's less activity on the system at this time).
Any other jobs running at the time? Could you move the backup window to a quieter time on the sytem?
September 11, 2012 at 10:48 am
HowardW (9/11/2012)
Yikes, lots of data there - could you edit that and remove all but the top couple of hundred rows or so as it's going to be very slow to load the thread? It's duplicating data as you've got multiple files per set, but your average throughput has gone down from 65-85MB/s to 33MB/s when you look at the last few backups, but actually, if you look back further, you had similar slow timings for your backups between 27th July and 3rd August, which makes me think this is likely to be I/O contention at the time the backup job runs rather than a hardware issue. This would also make sense as to why it was much faster when it was run outside of its normal schedule on the 8th (presumably there's less activity on the system at this time).Any other jobs running at the time? Could you move the backup window to a quieter time on the sytem?
Only other (SQL Agent) jobs running is the tlog backup job that runs every 6 minutes. Never caused an issue before.
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