Whoa ... can anyone substantiate that this poor performance is typical or atypical of DPT SCSI RAID controllers?
I was just about to drop $6000 on a DPT SmartRAID IV 64MB. . . Chuck Youse Director of Systems cyo...@cybersites.com On Thu, 13 May 1999, Greg Lehey wrote: > On Wednesday, 12 May 1999 at 15:18:22 -0400, Mark J. Taylor wrote: > > BTW: this system is getting VERY poor I/O performance, using the DPT SCSI > > RAID > > controller and three arrays of four 49 GB Seagate drives. "iozone" reports > > 340,000 bytes/sec write and 9,800,000 bytes/sec read. > > That's particularly bad. Which model was it? I've done some > comparisons with Vinum and found that the write performance of Vinum > (RAID-5) was round 25% of read performance, while it was below 10% on > the SmartRAID IV. To Unsubscribe: send mail to majord...@freebsd.org with "unsubscribe freebsd-hackers" in the body of the message
