I can comment on the part about the cache size. The decision to go with
higher or lower cache sizes usually has to do with what size files are being
stored and read.
I have spoken to seagate about this and their comment is that the larger
harddisk cache sizes are more useful for very large files and applications
such as digital imaging and filesystem imaging.
For database / multiple database applications the cache size becomes less
important and seek speeds and system ram becomes more important.
In either case, if money is not an issue, more is better.
I hope this helps.
Charles Wilkins
----- Original Message -----
From: "root" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Wednesday, April 25, 2001 3:30 PM
Subject: Hardware RAID Advice Sought
>
> Hello,
>
> I am building a brand new server box and would like some input by the
> experts on what hardware to buy. The box will be a Supermicro 370DE6,
> with dual PIII-1GHz, running Linux kernel 2.4.x
>
> I was thinking of going with the new Seagate Barracuda 180s in a RAID 5
> setup. 5 drives (+ 1 parity drive) gets you 900GB of disk space for about
> $10k. They are thick bastards, but I don't need hot-swap, etc.
>
> How much benefit would there be getting the 16MB cache version versus the
> 4MB cache?
>
> I have been digging around in archives, etc, but can't decide which
> hardware raid controller will be the best for Linux. The options for U160
> multichannel hardware RAID seem to be the Mylex ExtremeRAID 2000, the
> Adaptec 3400S, and the AMI MegaRAID (Elite/Enterprise 1600). I won't have
> time for constant tinkering, so mature hassle-free drivers and support
> software is probably my number one concern.... any hints for me? The
> motherboard supports 64bit/66MHz PCI, btw.
>
>
> And, from the what-a-newbie column, maybe someone can help me out here:
> If I buy 3 HDs now, and put them together in a RAID5, can I simply add 3
> more drives later on? I don't neccesarily want to resize the existing
> partitions, but rather to be able to add new ones within the RAID. It
> seems like this would be a common thing, but I seem to recall an email
> saying this is problematic.
>
>
> OK, thanks for your time,
> Doug (shamelessly posting as root)
>
>
>
>
>
>
>
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