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zcr vs. dedicated card?

U

unhappy_mage

[H]ard|DCer of the Month - October 2005
Joined
Jun 29, 2004
Messages
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which yields better performance with scsi raid, a zcr addin on the motherboard or a seperate scsi raid card?

my situation is as follows. I am buying a fileserver machine with sata raid which may eventually be upgraded to scsi. it will be using either this motherboard with scsi or this one without. I am wondering whether to get the one with scsi, recognizing that it'll eventually move to scsi, and then add a zcr card, or to stick with the non-scsi one and then get a pciX scsi raid card. Any suggestions wrt bang/buck?

thanks for the advice.
 
What's the ultimate purpose of the Scsi raid? speed/reliability? How many people will be hitting it at a time?

If you plan on a high load for this server and speed is the most critical concern, go for the outboard scsi raid card. The ZCR's are a nice easy add in, but not quite the performance of an outboard especially under high load situations. BUT that doesn't mean that you should buy the board w/o scsi... Gonna have a backup solution? might need scsi to run that...
 
Nice board, but i've never heard good performance being had with ZCR solutions. I played with a supermicro server that had 2 x 15K cheetah's in RAID 1 powered off of an Adaptec u160 ZCR card. The HDTach scores (not the best for RAID, i know..) were terrible and we ended up pulling the ZCR card out and going with a dedicated RAID card.
 
nate: this _is_ the backup solution. we will be doing backups of it (i hope) but those will probably be on blu-ray by the time i get this put together :rolleyes: the purpose of the scsi raid will be speed only. reliability for this array needs to be long enough to get it onto the raid5. i'm thinking something along the lines of 2x74gb 15k 320 sseagates or maxtors. raid0. it'll be only a single application banging on it at once, but it will take any bandwidth i have.

ambit: thanks for the reply, this is exactly what i was looking for. what card did you get? how'd it do?
 
I wasn't the primary person responsable for that machine, but i think they ended up going with a different adaptec RAID controller. I personally would have gone for a LSI.
 
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