--- Henrique de Moraes Holschuh <[EMAIL PROTECTED]> escribi�: > > If your RAID HW controller was a top-notch one, with lots of buffers and a > proper HW engine... maybe. But el-cheap-o Promise PDC20265 is worth very > little (I have an Asus A7V with a PDC20265. I talk from experience). > > The RAID HW controllers I have used (Intel SCRU32 with 64MB cache and IBM > serverRAID with (I think) also 64MB cache) were not much faster when doing > raid 1 (these are SCSI disks, though, and tagged queues make a lot of > difference). They were better for RAID5, though. And these are high-end, > proper HW RAID controllers talking to SCSI-160 disks.
[SNIP] > If you have two disks, one in each channel of your PDC20265, running in > UDMA100, it *is* faster to use Linux software RAID in my experience (Asus > A7V, 256MB PC133 SDRAM, Athlon Thunderbird 1.2GHz). > > If you doubt it, test it. Don't buy the "HW must be better than software" > crap, it is only true if you use the proper HW. And the PDC20265 ain't one > when compared to a fast processor and a proper OS with enough RAM. > Actually, it ain't a proper RAID HW controler at all in my book. Point taken. I don't have much experience with high end hardware and only very limited experience (one machine at school w/ Promise RAID 20276) with RAID. About the most "high-end" hardware I've worked on is a grey box with an Athlon, running Woody, and hooked up to an UPS. Thanks for the insight. -Roberto ___________________________________________________ Yahoo! Messenger - Nueva versi�n GRATIS Super Webcam, voz, caritas animadas, y m�s... http://messenger.yahoo.es -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
