i was under the impression that ata drives used large amounts of cpu when doing large transfers. have you done any benchmarks in this ide setup? i am very interested to know what kind of performance you are seeing, and what impact it has on cpu utilization. thanks, jacob On Sun, Sep 17, 2000 at 11:28:25AM -0400, Chris Mauritz wrote: > > From [EMAIL PROTECTED] Sun Sep 17 08:48:00 2000 > > > > On Wed, 13 Sep 2000, Chris Mauritz wrote: > > > > > What type of array are you building? The 3WARE IDE RAID cards > > > are very nice, but they only support 0/1/0+1. I'm using them > > > with great success under both Linux and win2K. > > > > raid5 or raid10 using 3 or 4 scsi (seagate cheetah x15) > > RAID 10 (0+1) would only work with 4 drives. RAID 5 will work > with 3 or 4....preferably 4. > > > > And yes, the ExtremeRAID cards are noticibly faster than > > > the other common RAID cards in their price range....especially > > > for RAID 5 applications. > > :( > > what will be the best card after the mylex ? > > i don't need 4 channels or something since i will use them in a 2u > > rackmount case, that only has 1 backplane > > I don't know. I tried both ICP Vortex and DPT cards in the $1500 > range and they were all noticibly slower than an ExtremeRAID 1100 > on my RAID 5 (with 8 cheetahs). Even with the ExtremeRAID, I was > only able to get about 21m/sec for writes and about double that > for reads. RAID 5 is just really piggy. On my newer 1U and 2U > boxes, I simply use RAID 0 and do more frequent backups. > > If RAID 0+1 is an option for you, you can save a LOT of money > by using a 3WARE Escalade controller and 4 7200rpm IDE drives. > It will perform better than a 4-drive RAID 5 array (even with > the fastest ExtremeRAID controller). I'm using a lot of these > on my newer linux and win2k machines and am quite happy with > them. > > For example....here are the specs on my mp3 jukebox machine > at the office: > > P3-850 > Asus CUSL2 motherboard (Intel 815) > 256mb SDRAM > Integrated video > Toshiba 40x ATAPI CD-ROM > Netgear FA310X ethernet card > Supermicro full-tower case > 3WARE Escalade 8-port IDE RAID card > 8 x Maxtor 60gig ATA/66 drives > Redhat 6.2 > > So I've got a half terabyte of storage on a very fast > general purpose machine and the entire system cost only > about $3500. I could have held out a few more weeks and > spent slightly more for the 80gig Maxtor drives, but I > had an itchy trigger finger. 8-) > > The limiting performance issue here seems to be the > ethernet card. I've ordered a gigabit card to see > if that will improve things when lots of people are > hitting it at once. I suspect it will help quite > a bit. > > Cheers, > > C - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to [EMAIL PROTECTED]
