Re: AIX versus SUN and Linux, best price performance ?
From: Frank van de Pol (frank_at_coil.demon.nl)
Date: 01/28/04
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Date: Wed, 28 Jan 2004 22:19:58 +0100
Please don't use RAID-5 in database applications if high performance is
one of your objectives. Better use RAID-10 (combination of mirroring and
striping) at the expense of 50% diskspace for redundancy.
Looking at the number of disks I suppose scsi is the way to go.
Dell makes some pretty decent (and cheap) servers as well.
Frank.
Arlé Mooldijk wrote:
> "Louis" <nospam@nospam.nl> wrote in message
> news:3ee728e8$0$49103$e4fe514c@news.xs4all.nl...
>
>
>>We have a IBM RS6000 F50 running AIX 4.3.3 with 3 CPU's and 9 mirrored
>
> disks
>
>>and 1.5 GB internal memory. DBMS Basis 9.1 runs on it. This database can
>
> be
>
>>compared with Oracle regarding performance. However it's not
>>multi-threading.
>>
>>We are thinking of upgrading hardware. The F50 cannot handle the job
>>anymore. The Basis DBMS runs on AIX, Linux and SUN. Our database will be
>>around 60 GB and should be spreaded on multiple disks (at least 4). In
>
> total
>
>>we need at least 10 disks (20-40 GB). We need 2-4 GB memory.
>
>
> Why do you need at least 10 disks? Disks have more storage space these
> days...
>
>
>>The solution should be cheap but also reliable. So, we prefer cheap memory
>>and cheap (instead of expensive IBM SSA disks) SCSI or even IDE disks.
>
>
> Linux is cheap. If it is a serious server then I'd recommend SCSI with a
> RAID5 controller for the database storage and a mirrored disk for OS. This
> means about 5 disks minimum (3 for RAID5 and 2 for OS). HotSwap if desirable
> (but very nice and handy when you can afford it; saves you downtime when a
> disk fails). HP/Compaq is a good choice for Intel based servers. The support
> of HP is very good (personal experience).
>
> Just my opinion though...
>
> With Kind Regards,
> Arlé
>
>
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