On Oct 5, 2010, at 1:47 PM, Roy Sigurd Karlsbakk wrote: >> Western Digital RE3 WD1002FBYS 1TB 7200 RPM SATA 3.0Gb/s 3.5" Internal >> Hard Drive -Bare Drive >> >> are only $129. >> >> vs. $89 for the 'regular' black drives. >> >> 45% higher price, but it is my understanding that the 'RAID Edition' >> ones also are physically constructed for longer life, lower vibration >> levels, etc. > > Well, here it's about 60% up and for 150 drives, that makes a wee > difference... > > Vennlige hilsener / Best regards > > roy
Understood on 1.6 times cost, especially for quantity 150 drives. I think (and if I am wrong, somebody else correct me) - that if you are using commodity controllers, which seems to generally fine for ZFS, then if a drive times out trying to constantly re-read a bad sector, it could stall out the read on the entire pool overall. On the other hand, if the drives are exported as JBOD from a RAID controller, I would think the RAID controller itself would just mark the drive as bad and offline it quickly based on its own internal algorithms. The above would also be relevant to the anticipated usage. For instance, if it is some sort of backup machine and delays due to some reads stalling on out TLER then perhaps it is not a big deal. If it is for more of an up-front production use, that could be intolerable. _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
