hi guys..

our client recently reported a slow backup performance.
i currently run out of idea, hope the list can shed some light...:)

environtment
1 backup server w2k sp3
2 x xeon 700, 2 GB RAM
1 Emulex FC8000
1 Emulex FC7000
1 ATLP6000 w/ 12 DLT7K
1 ATLP3000 w/ 6 SDLT

8 storage nodes
w2k sp3
2 x emulex 8000
san disk 3 x 130 GB
millions of small files, average size 40K/file.
storage box: 2 x fc4500 (total 2.4TB) and 1 x hp512 (2.6TB)

emulex details:
firmware 3.02
driver version 2.11a2


When the backup start, the backup speed ranging from 300KB/s to 2MB/s
But the speed can easily drop to 50KB/s and stays there forever.

I guess small files contributes to this problem,
but with the speed of only 50KB, there must be something is not correct
somewhere.

So any of you guys using emulex hba with w2k, please share the firwmare and
driver version used

any other idea deeply appreciate...



Network diagram (simplified)

                backup svr
        ____________|  |_____________
        |                            |
      brocade                      brocade
   ___|  | |______               ___|  | |______
   |      |       |              |     |       |
2xFC4500 |      4 SN           1xXP512 |      4 SN
          |                            |
        ATL P3K                       ATLP6K




cheers - han

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