[K12OSN] SATA drive for server with 25 users?

[Robert Arkiletian]

On 10/16/06, Petre Scheie <petre at maltzen.net> wrote:
>
> We haven't had any discussion for a while now as to how well SATA drives
> scale up in a
> K12LTSP server.  It used to be, back in the PATA days, that an ATA (also
> known as IDE)
> drive would handle up to 10 clients, but going any higher than that
> resulted in poor
> performance that could be addressed only by going to SCSI with its ability
> to re-order
> queues and so forth.  But SATA has been out for a while, it now has many
> of the features
> of SCSI, and I see that 10K RPM versions are available, and so I'm
> wondering if the
> consensus now is that SATA is good enough for small and even mid-size
> servers, where by
> 'midsize' I mean roughly 25 clients hanging off of it.  What about 7200RPM
> SATA drives?
> Thoughts?


Although I use scsi in my server my advice would be to make a software raid
1 for / , /var, /tmp on 2 fast 10k rpm drives and /home and swap on another
2 (bigger) 7200rpm drives. Intel 945P chipsets usually come with ICHR
southbridges (which have AHCI needed for NCQ) that have 4 SATA ports. Or if
you want lots of space for /home then buy another cheap Sil3132 based PCI-E
SATA controller (I think SYBA makes them) for another 2 SATA ports and make
a RAID 5 for /home with upto 4 drives.


Petre
>
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-- 
Robert Arkiletian
Eric Hamber Secondary, Vancouver, Canada
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