SUMMARY: Re: Third A1000 on a E450 - daisy chain or put on a separate adapter card?

From: Sridhar <ssridhar_at_raven.pnu.com>
Date: Fri Feb 22 2002 - 12:46:48 EST
Thanks to all those that responded advising me to put the A1000 on a
separate controller card to improve I/O performance.
"Kevin Buterbaugh" <Kevin.Buterbaugh@lifeway.com> told me that there is a
limit of 15 drives per SCSI card and hence I may not even be able to see
some of the drives on the new A1000 if I put it on the same card. We are
planning on buying a SCSI card as well and spreading the 3 A1000s across the
three available PCI buses.

SS

----- Original Message ----- >
> Subject:  Third A1000 on a E450 - daisy chain or put on a separate
adapter
>       card?
>
>
> We have two A1000s on a E450 each attached to its own SCSI card. Each of
> these
> have 8X36GB drives (1.6") in a single raid group. We plan to buy another
> A1000
> (for our expanding oracle databases) with 12X36.4GB drives (the 1" type).
> If
> we daisey-chain this to one of our existing A1000, will we be losing on
I/O
> throughput? Is it better to put it on a third SCSI card?
>
> thanks
> SS
> _______________________________________________
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> sunmanagers@sunmanagers.org
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Received on Mon Feb 25 01:39:44 2002

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