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тАО10-21-2004 11:09 AM
тАО10-21-2004 11:09 AM
Re: MSA1000 low perfomance
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тАО10-21-2004 09:22 PM
тАО10-21-2004 09:22 PM
Re: MSA1000 low perfomance
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тАО10-22-2004 05:37 AM
тАО10-22-2004 05:37 AM
Re: MSA1000 low perfomance
(~20Mbps), do you mean 20MB/s.
Are you copying from MSA LUN to MSA LUN?
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тАО10-24-2004 05:14 PM
тАО10-24-2004 05:14 PM
Re: MSA1000 low perfomance
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тАО10-25-2004 05:09 AM
тАО10-25-2004 05:09 AM
Re: MSA1000 low perfomance
If you have anti-virus software with realtime protection, you will see performance degradation with copies and backups.
Let me know if it fixes your problem.
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тАО10-25-2004 07:03 AM
тАО10-25-2004 07:03 AM
Re: MSA1000 low perfomance
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тАО10-25-2004 09:10 PM
тАО10-25-2004 09:10 PM
Re: MSA1000 low perfomance
All,
as we were told Moscow HP SERVICE ├в ├в the measured activities are design features of MSA1000. By the way, you will not find anywhere tech data for MSA with MBs benchmarks├в .
That is true, only one doc where got - 30000IOPs. Try to fin
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тАО10-26-2004 03:06 AM
тАО10-26-2004 03:06 AM
Re: MSA1000 low perfomance
I can tell you it is not a design feature of the MSA.
The ~50MB/s I stated was from a actual 2G file D2D copy (MSA to MSA LUN). Both drives were RAID 1+0.
Using a DL380G3, Windows 2003. My 2G copy took 40sec.
Right, 30000 IOPS. All array manufacturers quote IOPS and all IOPS are 100%
cache hits. High MB/s depend on your file size. Small transactions, small MB/s but high IOPS. Large transactions, large MB/s but low IOPS. Databases are small transaction typically 8k.
If you have the time, can we make sure we are comparing the same numbers. Let's create a 2G file. Find a directory for the file. At a cmd prompt Enter the following,
fsutil file createnew c:\yourdir\test.txt 2147483648. Open your clock and just time the copy from one lun to the other.
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тАО10-27-2004 06:09 PM
тАО10-27-2004 06:09 PM
Re: MSA1000 low perfomance
we did as you told. Found out amazing results - 25 sec., But Perf monitor does not show any READ disk activity. Earlier we copied real database arh file. First we copied it to the source disk, reloaded server and storage (to flush cache) and then started copy to target disk. (see atth). We will try to make our exe once more on weekend. I`ll reply on monday.
[teplov][karatsc][ru]
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тАО10-27-2004 06:13 PM
тАО10-27-2004 06:13 PM
Re: MSA1000 low perfomance
We did as you told. Found out amazing results - 25 sec., But Perf monitor does not show any READ disk activity. Earlier we copied real database arh file. First we copied it to the source disk, reloaded server and storage (to flush cache) and then started copy to target disk. (see atth). We will try to make our exe once more on weekend. I`ll reply on monday.
[teplov][karatsc][ru]