Messages in this thread | | | From | "Roland" <> | Subject | WD doesn`t use disks with Linux - was Re: Re:Western Digital GreenPower drives and Linux | Date | Tue, 13 May 2008 23:00:42 +0200 |
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>BTW, WD's tech support has gone silent so chances for an easier solution >are not so great. > >Tvrtko
I`ve got a real funky response from WD support today, i`d like to share here. This is just too weird....
After asking if they could give a comment if the problem with the high Load_Cycle_Count may be an issue of their drives or an issue of Linux i got:
------ Dear...... The problem is, that we actually don`t use the disks with Linux. I´m sorry that i cannot send further information to you.
Sincery yours <insert support employee name here> Western Digital Service and Support ------ (translated from german)
So, WD sells enterprise SATA disks, optimizied for 24/7 & Raid array usage, but they don`t seem to actually test them with Linux or at least are not able to "support" Linux usage.......
Ridicuous!
> List: linux-kernel > Subject: Western Digital GreenPower drives and Linux > From: "Tvrtko A. Ursulin" <tvrtko () ursulin ! net> > Date: 2008-04-09 20:18:35 > Message-ID: 200804092118.35501.tvrtko () ursulin ! net > [Download message RAW] > > > Hi all, > > The subject may be a bit misleading since I haven't investigated the whole > issue under other OS-es (nor do I plan to), but this is how the story > goes.. > > Those fancy new WD GreenPower drives seem to be heavily suffering from the > rapidly increasing head load/unload problem. And the bad thing is they > don't > respond to 'hdparm -B', which would mean (I think) their power management > behaviour is solely up to their firmware. > > I got one of them (WD5000AACS) recently and to my horror after less than > three > days of being power on this is what I saw: > > 9 Power_On_Hours 0x0032 100 100 000 Old_age Always - 66 > 193 Load_Cycle_Count 0x0032 197 197 000 Old_age Always - 10233 > > At this rate the disk would reach it's design limit for load/unload cycles > in > around 80 days. Not good - so I implemented a lame workaround of keeping > disk > busy every couple of seconds - hopefully that won't kill it sooner that > unloads would.. > > I am also currently talking with first line of WD's tech support trying to > get > some data on how exactly those drives manage head unloading, but that may > not > lead anywhere useful. > > So in parallel I decided to ask here to see if someone knows something > about > this? > > If it matters, I am running vanilla 2.6.24 on that box and sata_sil is > driving > that disk. Otherwise it is a pretty basic Ubuntu 7.10, a mix of ext3 and > jfs > filesystems, all mounted with noatime. More detailed information available > on > request. > > Tvrtko > > >
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