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AIX versus SUN and Linux, best price performance ?
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" wrote in message ... 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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