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тАО04-30-2007 12:23 AM
тАО04-30-2007 12:23 AM
MSL6030 Slow Backup Speed
We Have MSL6030 connected to SAN and we use Vertias NetBackup 6 backup Software
We try backup over SAN and speed is average 20-30Mb/s
and backup over a 1Gbt LAN and speed is average 25-32Mb/s
As I know Ultrium 960 max speed is 80Mb/s
Where du I check the bottleneck? Its normal backup speeds?
I try deferent backup types, files, exchange, sql db, and always speed itтАЩs not more than 30 Mb/s
Library and Drives has latest firmware and NSR E1200-160 full updated
Solved! Go to Solution.
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тАО04-30-2007 12:30 AM
тАО04-30-2007 12:30 AM
Solutionmaybe the server, that you backup, can`t deliver the data fast enough. Did you backup more than one server over LAN at the same time, will say do you use streaming? If you backup over SAN, you backup the servers successively, correct?
Kind regards,
Patrick
Patrick
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тАО04-30-2007 01:02 AM
тАО04-30-2007 01:02 AM
Re: MSL6030 Slow Backup Speed
and server that has no
load
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тАО04-30-2007 11:39 PM
тАО04-30-2007 11:39 PM
Re: MSL6030 Slow Backup Speed
One for the L&TT tool
http://h20000.www2.hp.com/bizsupport/TechSupport/DriverDownload.jsp?pnameOID=406731&locale=en_US&taskId=135&prodSeriesId=406729&prodTypeId=12169
And one for general performance troubleshooting, with links to the performance tools
http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=lpg50460&locale=en_US
If your tape drives check out OK (which they probably will) - you need to find out why the data is 'slow' - starting with the disk/array performance.
Hope this helps
Rich
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тАО05-01-2007 01:09 AM
тАО05-01-2007 01:09 AM
Re: MSL6030 Slow Backup Speed
DAS Disk:
Scanning
D:\speedtest - Files Read: 4
2273 MB read (4 files) in 35 seconds with rate 64 MB/sec
TOTAL: 2273 MB read (4 files) in 35 seconds with rate 64 MB/sec
SAN Disk:
Scanning
F:\speedtest - Files Read: 4
2273 MB read (4 files) in 25 seconds with rate 90 MB/sec
TOTAL: 2273 MB read (4 files) in 25 seconds with rate 90 MB/sec
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тАО05-01-2007 01:59 AM
тАО05-01-2007 01:59 AM
Re: MSL6030 Slow Backup Speed
Some other information - I had an ULTRIUM 2 which "flattened out" at 60MB/sec, and the problem was traced to the driver for the HBA.
Check you have up to date drivers for the HBA's, and the drives (I think they should be Veritas for Netbackup). Also - with a drive feed speed of 90MB/sec, the ULTRIUM 3 will probably underperform anyway - but it should be better than what you are getting.
Network backup may vary depending on contention/loading.
Are you connected to a 2Gb SAN ??
Do the Drives have "dedicated" HBA's - or are they shared with the disk storage ??
Is Netbackup optimised ?
Rich
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тАО05-01-2007 02:34 AM
тАО05-01-2007 02:34 AM
Re: MSL6030 Slow Backup Speed
Yes its connected to 2Gb SAN
Can you discribe it: "Do the Drives have "dedicated" HBA's - or are they shared with the disk storage ???
"Is Netbackup optimised" what or how and whare?
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тАО05-01-2007 04:40 AM
тАО05-01-2007 04:40 AM
Re: MSL6030 Slow Backup Speed
You can achieve a similar result using zoning on you switches (dedicated "tape zone").
Are you using either zoning or mapping to seperate disk and tape traffic ?
Rich
BTW - I don't know much about NetBackup 6 - but with previous versions you used to be able to set the block size and buffer count (i.e. memory allocation) for each tape unit. These could have a significant effect on drive performance (rule of thumb is "bigger is better")
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тАО05-04-2007 03:40 AM
тАО05-04-2007 03:40 AM
Re: MSL6030 Slow Backup Speed
Disk Array its EVA40002C2D
after enabling zoning on sw backup device works wery unstable, maybe I miss some hosts? but Im adding HSV, E1200, BackupServer and Backup Source Server, all in one Zone.
...in NetBackup I cant find advanced futures like block size and buffer count...
I post same message on Symantec support site but no answer :(
Maximum speed that i can see on my MSL6030 (Ultrium 960 Tapes) and NetBackup 6.0MP4 its 40Mb/s :(
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тАО05-09-2007 01:31 AM
тАО05-09-2007 01:31 AM
Re: MSL6030 Slow Backup Speed
This is the HP backup design guide, which includes information on zoning -
http://h20000.www2.hp.com/bc/docs/support/SupportManual/c00775232/c00775232.pdf
This document provides advice on optimizing NetBackup in an HP environment (search for 'buffer allocation'):
http://h20000.www2.hp.com/bc/docs/support/SupportManual/c00107964/c00107964.pdf
And this is the "main" page for HP EBS (Enterprise Backup Solutions) -
http://h18006.www1.hp.com/products/storageworks/ebs/index.html
Correct load-balancing and mapping can be complex when configuring the E1200 - assuming you have just one E1200, you should be presenting the MSL library and drives to one HBA in each server. Like I said, this can be accomplished by creating a dedicated zone, and/or using the mapping function on the E1200. There are some docs on the E1200 here:
http://h20000.www2.hp.com/bizsupport/TechSupport/DocumentIndex.jsp?lang=en&cc=us&taskId=&contentType=SupportManual&docIndexId=1255&prodSeriesId=316024&prodTypeId=329290
.......But unfortunately they aren't too clear in explaining how to setup mapping.
If I can find a better guide. I'll post it here.
Regards
Rich