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Hello
I’m a long time user of scsi raid, but this year i have seen some s-ata raid running very well. I’m planning to buy a new workstation in the next 2 month and i’m little bit confuse about this question.
I’m planning to build a raid 5 with 12 drives Wester Digital raptor 74gig 10k on a 3ware 9000serie. This setup will be able to subtain 2k uncompress 360mo/sec. Mostly to run 3dlut visualisation.
On paper this is a good config but in fact i’m not 100% sure. If you have any advice about this type of configuration you are welcome.
“Qu’est-ce que tu en pense Xavier ?”
config:
dual opteron 250
4gig of ram
raid 5 12drive 10k s-ata
Fx4000luc
We use such raids for a 2 years from old 7000 series of 3ware. Now we exchange all our controllers with 9000 series. For one controller we have 190 Mb/sec read and 100 Mb/sec for write. Other systems with multiple controllers we are not upgrade yet – now it equpped with 8000 series and for 3 controllers we have ~230 Mb/sec for read. The read performance more important because no realtime scanner exist (the Spirit4K/GSN solution is unreacheable :o).
Yes, you must have enough CPU power but much more importance to have good chipset. The 7505 chipset have REAL two channels of PCI so you can reach more bandwidth than on the systems with single channel chipset. We use Intel motherboards. If you like AMD you must look for real 2-channels of PCI chipset – I don’t know exact models. Otherwise you will be limited by the PCI performance with no accelerating from using multiple controllers.Hmm, there are some SAT drives that are connected through independent controllers that actually run faster than scsi. You might want to check out a fibre channel card, they really speed things up. I have only used Apple and SGI RAID’s and they both run very good.
Salut mon Luc…
PPGingras
The key is wether it has independent controllers for each disk. That is the key for sata to be faster than scsi.
About brands you should consider Apple’s system…
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