On Tue, October 5, 2010 15:30, Roy Sigurd Karlsbakk wrote:
> I just discovered WD Black drives are rumored not to be set to allow TLER. > Does anyone know how much performance impact the lack of TLER might have > on a large pool? Choosing Enterprise drives will cost about 60% more, and > on a large install, that means a lot of money... My immediate reaction to this is "time to avoid WD drives for a while"; until things shake out and we know what's what reliably. But, um, what do we know about say the Seagate Barracuda 7200.12 ($70), the SAMSUNG Spinpoint F3 1TB ($75), or the HITACHI Deskstar 1TB 3.5" ($70)? This is not a completely theoretical question to me; it's getting on towards time to at least consider replacing my oldest mirrored pair; those are 400GB Seagate, I think, dating from 2006. I'd want something at least twice as big (to make the space upgrade worthwhile), and I'm expecting to buy three of them rather than just two because I think it's time to add a hot spare to the system (currently 3 pair of data disks, and I've got two more bays; I think a hot spare is a better use for them than a fourth pair; safety of the data is very important, performance is adequate, and I need a modest capacity upgrade, but the whole pool is currently 1.2TB usable, not large). On the third hand, there's the Barracuda 7200.11 1.5TB for only $75, which is a really small price increment for a big space increment. The WD RE3 1TB is $130 (all these prices are from Newegg just now). That's very close to TWICE the price of the competing 1TB drives. -- David Dyer-Bennet, d...@dd-b.net; http://dd-b.net/ Snapshots: http://dd-b.net/dd-b/SnapshotAlbum/data/ Photos: http://dd-b.net/photography/gallery/ Dragaera: http://dragaera.info _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
