[LUAU] off topic: performance question

[Jaymes Schooler]

>From what I've seen there's no real significant speed advantage to going
over 8MB Cache on the drives.  But the real answer lies in what the
expected throughput is based on the user demand and system overhead.

For my purposes, I ended up dropping SATA altogether for SCSI because my
test run showed that the SATA drive array became bogged down during
heavy Database related operations  

-----Original Message-----
From: luau-bounces at lists.hosef.org [mailto:luau-bounces at lists.hosef.org]
On Behalf Of Charles Lockhart
Sent: Thursday, January 20, 2005 11:48 AM
To: LUAU
Subject: [LUAU] off topic: performance question


Hiya,

quick question to anyone who has the interest to answer:
We ordered a NAS, raid 5 system based on 3ware dual opteron (1.8Ghz) 
boxes running RH7.3 and CyberNAS software.  We ordered 20 SATA 250GB 
drives with 16MB caches for it.  What we got was 20 SATA 250GB drives 
with 8MB caches.  And we're trying to figure out if the impact on 
throughput is worth several months of waiting for the other drives to 
come in, and possibly having to pay out a bit more money.

I don't have any experience with this, was wondering if anyone on LUAU 
has a reccomendation?

Thanks in advance,

-Charles
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