On Tue, Jan 19, 2010 at 11:07:24AM +0100, Gerrit Kühn wrote: > On Tue, 19 Jan 2010 01:57:36 -0800 Jeremy Chadwick > <free...@jdc.parodius.com> wrote about Re: immense delayed write to file > system (ZFS and UFS2), performance issues: > > JC> If you want a consumer-edition drive that's better tuned for server > JC> work, you should really be looking at the WD Caviar Black series or > JC> their RE/RE2 series. > > That's exactly what I did. I have WD-RE2 drives here that show exactly > this problem (RE2/GP)! The model number is WD1000FYPS-01ZKB0.
I should have been more specific. WD makes RE-series drives which don't have GP applied to them; those are what I was referring to. Here's the current list of Western Digital SATA models out there, sans some earlier revisions. All below drives are 3.5", SATA300, and have their SATA power/signal ports placed to permit hot-swapping in drive carriers unless otherwise noted. Enterprise high-performance class =================================== WD3000GLFS - WD VelociRatpor, 300GB, 16MB, 10Krpm, no-hotswap WD1500HLFS - WD VelociRaptor, 150GB, 16MB, 10Krpm WD3000HLFS - WD VelociRaptor, 300GB, 16MB, 10Krpm WD1500BLFS - WD VelociRaptor, 150GB, 16MB, 10Krpm, 2.5" bare WD3000BLFS - WD VelociRaptor, 300GB, 16MB, 10Krpm, 2.5" bare Enterprise business-critical class ==================================== WD2502ABYS - WD RE3, 250GB, 16MB, 7200rpm WD3202ABYS - WD RE3, 320GB, 16MB, 7200rpm WD5002ABYS - WD RE3, 500GB, 16MB, 7200rpm WD1002FBYS - WD RE3, 1TB, 32MB, 7200rpm WD7502ABYS - WD RE3, 750GB, 32MB, 7200rpm WD2003FYYS - WD RE4, 2TB, 64MB, 7200rpm Enterprise energy-saving class ================================ WD5000ABPS - WD RE2-GP, 500GB, 16MB, variable rpm WD7500AYPS - WD RE2-GP, 750GB, 16MB, variable rpm WD1000FYPS - WD RE2-GP, 1TB, 16MB, variable rpm WD2002FYPS - WD RE4-GP, 2TB, 64MB, variable rpm Desktop class =============== WD800AAJS - WD Caviar Blue, 80GB, 8MB, 7200rpm WD1600AAJS - WD Caviar Blue, 160GB, 8MB, 7200rpm WD2500AAJS - WD Caviar Blue, 250GB, 8MB, 7200rpm WD3200AAJS - WD Caviar Blue, 320GB, 8MB, 7200rpm WD2500AAKS - WD Caviar Blue, 250GB, 16MB, 7200rpm WD3200AAKS - WD Caviar Blue, 320GB, 16MB, 7200rpm WD5000AAKS - WD Caviar Blue, 500GB, 16MB, 7200rpm WD6400AAKS - WD Caviar Blue, 640GB, 16MB, 7200rpm WD5000AACS - WD Caviar Green, 500GB, 16MB, variable rpm WD6400AACS - WD Caviar Green, 640GB, 16MB, variable rpm WD7500AACS - WD Caviar Green, 750GB, 16MB, variable rpm WD10EACS - WD Caviar Green, 1TB, 16MB, variable rpm WD5000AADS - WD Caviar Green, 500GB, 32MB, variable rpm WD6400AADS - WD Caviar Green, 640GB, 32MB, variable rpm WD7500AADS - WD Caviar Green, 750GB, 32MB, variable rpm WD10EADS - WD Caviar Green, 1TB, 32MB, variable rpm WD15EADS - WD Caviar Green, 1.5TB, 32MB, variable rpm WD20EADS - WD Caviar Green, 2TB, 32MB, variable rpm WD6400AARS - WD Caviar Green, 640GB, 64MB, variable rpm WD8000AARS - WD Caviar Green, 800GB, 64MB, variable rpm WD10EARS - WD Caviar Green, 1TB, 64MB, variable rpm WD15EARS - WD Caviar Green, 1.5TB, 64MB, variable rpm WD20EARS - WD Caviar Green, 2TB, 64MB, variable rpm WD5001AALS - WD Caviar Black, 500GB, 32MB, 7200rpm WD6401AALS - WD Caviar Black, 640GB, 32MB, 7200rpm WD7501AALS - WD Caviar Black, 750GB, 32MB, 7200rpm WD1001FALS - WD Caviar Black, 1TB, 32MB, 7200rpm WD2001FAAS - WD Caviar Black, 2TB, 64MB, 7200rpm So which drive models above are experiencing a continual increase in SMART attribute 193 (Load Cycle Count)? My guess is that some of the WD Caviar Green models, and possibly all of the RE2-GP and RE4-GP models are experiencing this problem. I say "some" with regards to WD Caviar Green since I have some which do not appear to exhibit the heads/actuator arm moved into the landing/park zone. I'm at work right now, but when I get home I can verify what models I've used which didn't experience this problem, as well as what the manufacturing date and F/W revisions are. I should note I don't have said Green drives in use (I use WD1001FALS drives now). -- | Jeremy Chadwick j...@parodius.com | | Parodius Networking http://www.parodius.com/ | | UNIX Systems Administrator Mountain View, CA, USA | | Making life hard for others since 1977. PGP: 4BD6C0CB | _______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org"
