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Re: SCSI Channel to LTO drive rule of thumb
2001-12-20 10:59:28
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Subject: |
Re: SCSI Channel to LTO drive rule of thumb |
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From: |
"Cook, Dwight E (SAIC)" <cookde AT BP DOT COM> |
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Date: |
Thu, 20 Dec 2001 09:55:54 -0600 |
Well, I can fill you in on 3590 drives and that might be close to LTO's
for each drive on the chain, add half of the previous drives thruput
with 3590-B1A's a single drive on a scsi card all by itself is rated at 9
MB/sec
add another one on the chain, you will gain another 4.5 MB/sec (9/2) or a
total of 13.5 MB/sec
add another one on the chain, you will gain another 2.25 MB/sec (4.5/2) or
a total of 15.75 MB/sec
add another one on the chain, you will gain another 1.125 MB/sec (2.25/2)
or a total of 16.875 MB/sec
so you see, past two drives on a card, things get ugly fast...
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