On Sat, 31 Jul 2004, Jurriaan wrote: > > So why are scsi raid-5 systems so much better? > > compared to other scsi raid-arrays, they are not 'better' for small > random writes. If they are better than ide, it's probably because of the > smaller access times for 15k rpm drives. And also because scsi drives can do tagged queueing which makes it more efficient to do a lot of smaller operations. Historically the SCSI drives also had more cache memory which helps the situation, and the scsi RAID controllers probably also had more cache memory on them (I know RAID systems that have gigabytes of cache memory). -- Mikael Abrahamsson email: swmike@xxxxxxxxx - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
