LinkBack URL
About LinkBacksRead more.Optimised to meet the needs of network-attached storage, says WD.
Read more.Optimised to meet the needs of network-attached storage, says WD.
Hard drive warranties are still regressing as far as I can see. What happened to 5 year warranties as per Velociraptors... :-(
------------------
Valar Morghulis
Sounds like a complete gimmick to me - Green/Eco drives work fine in a NAS box. Most NAS boxe's can shut down the drives if idle for time - ergo increasing the lifespan.
Perhaps Western should just concentrate on making better drives.
Lots of drives are the same inside, just different firmware designed for application. The world does not revolve around purely consumer drives.Originally Posted by Brewster0101
The WD Blacks still have 5 year warranties. As do velociraptors and 2.5" blacks.
Not strictly true. Desktop drives don't usually have TLER (Time-Limited Error Recovery) enabled, so they spend a while retrying if there's a problem, during which time the RAID controller won't see a response and may timeout the drive, assuming it's dead. This is obviously a bad thing.
Ironically, a lot of cheap NAS boxes use Linux software RAID and so probably won't suffer from TLER issues.
PHP Code:$s = new signature();
$s->sarcasm()->intellect()->font('Courier New')->display();
Although it's targeted at NAS users, the uncorrectable error rate is still only estimated at <1 in 10^14 (cite: http://www.wdc.com/wdproducts/librar...879-771442.pdf) or approx. one bit per 12 terabytes read. Which is only 6 passes of a new 2Tb drive (cite: http://serverfault.com/a/25691).
So for RAID use you still need to be wary when using these drives, especially for RAID5/6 rebuilds.
Simon
You can still enable TLER/CCTL manually on desktop like drives increasing it to 7s (from 0s) on reads/writes. Also drives without TLER/CCTL tend to drop out much often out of RAID arrays though.
For WD disks WDTLER can do this.
Most hardware RAID controllers will have this value set higher (or it should be set) to something like 20s so TLER/CCTL can kick in before the controller times out the drive.
My Blog => http://adriank.org
There are currently 1 users browsing this thread. (0 members and 1 guests)
Posting Permissions
Reply With Quote
