- 1. [Veritas-bu] 9940B (score: 1)
- Author: david.clooney at bankofamerica.com (Clooney, David)
- Date: Fri, 13 Oct 2006 11:09:20 +0100
- Hi Was wondering whether anyone knows the max I/O buffer size for the STK 9940B ? Trying to fine tune some media servers using the SIZE_DATA_BUFFERS and NUMBER_DATA_BUFFERS. And was thinking the driv
- /usr/local/webapp/mharc-adsm.org/html/Veritas-bu/2006-10/msg00221.html (12,434 bytes)
- 2. [Veritas-bu] 9940B (score: 1)
- Author: ida3248b at post.cybercity.dk (ida3248b AT post.cybercity DOT dk)
- Date: Fri, 13 Oct 2006 13:43:16 +0200
- Hi Dave I was told use the same tuning settings as for the 9840, but depending on your media server you can increase the NUMBER_DATA_BUFFERS Just remember this uses a lot of shared memory, so you may
- /usr/local/webapp/mharc-adsm.org/html/Veritas-bu/2006-10/msg00222.html (12,971 bytes)
- 3. [Veritas-bu] 9940B (score: 1)
- Author: bob944 at attglobal.net (bob944)
- Date: Fri, 13 Oct 2006 18:08:28 -0400
- That's unlikely to be correct. How does the drive subdivide its buffer space (or does it?)? How does it use it--wait for it to fill, then compute and write, waiting for it to empty before accepting
- /usr/local/webapp/mharc-adsm.org/html/Veritas-bu/2006-10/msg00242.html (12,682 bytes)
- 4. [Veritas-bu] 9940B (score: 1)
- Author: ida3248b at post.cybercity.dk (ida3248b AT post.cybercity DOT dk)
- Date: Sat, 14 Oct 2006 09:38:55 +0200
- In my experience there is quite a performance improvement to be had on the STK9840/9940 drives, the problem usually is do the media servers has enough resources. Regards Michael -- Cybercity Webhosti
- /usr/local/webapp/mharc-adsm.org/html/Veritas-bu/2006-10/msg00243.html (13,791 bytes)
- 5. [Veritas-bu] 9940B (score: 1)
- Author: david.clooney at bankofamerica.com (Clooney, David)
- Date: Sat, 14 Oct 2006 15:19:21 +0100
- Keep your hair on Bob Ok so tyou know about drives, point taken. I think you misinterpretted my mail. I was merely trying to find out the maximum I/O the drive supports , phew. Dave --Original Messag
- /usr/local/webapp/mharc-adsm.org/html/Veritas-bu/2006-10/msg00246.html (14,061 bytes)
- 6. [Veritas-bu] 9940B (score: 1)
- Author: dave-bu at graniteweb.com (David Rock)
- Date: Sat, 14 Oct 2006 22:50:06 -0500
- * Clooney, David <david.clooney at bankofamerica.com> [2006-10-14 15:19]: We have seen real world testing at 55MB/sec and I believe the rated speed is around 65MB/sec -- David Rock david at granitewe
- /usr/local/webapp/mharc-adsm.org/html/Veritas-bu/2006-10/msg00248.html (11,455 bytes)
- 7. [Veritas-bu] 9940B (score: 1)
- Author: david.clooney at bankofamerica.com (Clooney, David)
- Date: Mon, 16 Oct 2006 11:07:51 +0100
- Much appreciated for the response Brenton I have performed some tests after analysing bpbkar and bptm logs all all media servers and a number of their bptm logs indicate that they are not waiting for
- /usr/local/webapp/mharc-adsm.org/html/Veritas-bu/2006-10/msg00255.html (16,901 bytes)
- 8. [Veritas-bu] 9940B (score: 1)
- Author: jack.l.forester at lmco.com (Jack Forester, Jr.)
- Date: Mon, 16 Oct 2006 08:26:56 -0400
- We've got a bunch of 9940B drives and use 262144 for SIZE_DATA BUFFERS. Performance is very good. When we eval'd the drives a couple of years ago, I saw peak performance of 65MB/sec on really compres
- /usr/local/webapp/mharc-adsm.org/html/Veritas-bu/2006-10/msg00261.html (12,534 bytes)
- 9. [Veritas-bu] 9940B (score: 1)
- Author: pkeating at bank-banque-canada.ca (Paul Keating)
- Date: Mon, 16 Oct 2006 09:40:33 -0400
- - --Original Message-- From: veritas-bu-bounces at mailman.eng.auburn.edu [mailto:veritas-bu-bounces at mailman.eng.auburn.edu] On Behalf Of Clooney, David Sent: October 16, 2006 6:08 AM To: Brenton
- /usr/local/webapp/mharc-adsm.org/html/Veritas-bu/2006-10/msg00264.html (14,610 bytes)
- 10. [Veritas-bu] 9940B (score: 1)
- Author: austin.murphy at gmail.com (Austin Murphy)
- Date: Mon, 16 Oct 2006 11:01:34 -0400
- Watch out. The T10000 can only read and write at 120MB/sec or 50MB/sec (native). That could end up a lot slower than you expect if the data source can't keep up. It only takes about 2 or 5 seconds to
- /usr/local/webapp/mharc-adsm.org/html/Veritas-bu/2006-10/msg00267.html (11,509 bytes)
- 11. [Veritas-bu] 9940B (score: 1)
- Author: david.clooney at bankofamerica.com (Clooney, David)
- Date: Mon, 16 Oct 2006 16:10:45 +0100
- Much appreciated once again everyone for the response on this topic, the info has certainly made things a lot clearer. Additionally I have run some bpbkar32 tests to NULL and it would appear in some
- /usr/local/webapp/mharc-adsm.org/html/Veritas-bu/2006-10/msg00269.html (21,193 bytes)
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