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Forum Discussion
chelsel
Aug 13, 2008Aspirant
Seagate ST31500341AS 1.5TB
Any idea when this will be supported :-) Cliff
Froboz
Nov 03, 2008Aspirant
I and many others have been experiencing serious problems with these drives including:
* dropping out of RAID configurations for no apparent reason
* being ejected from a RAID configuration due to read / write errors
* freezing for up to 30 seconds
These problems have been reported on Linux, Vista, XP, and OS X and appear to be related to how the drives flush their write cache. In many cases, the drives work fine for days or weeks before problems appear. In my case, I bought five of these for my Qnap TS-509 Pro and they worked great for about two weeks under various read / write loads. Since then, I've had all three of the problems mentioned above on different drives and they are growing progressively worse. The latest problem was three of the five drives disappearing from the RAID5 volume while I was attempting to copy the files to a different NAS.
A work-around that has been successful for some is to disable the disk write cache. Other than the obvious performance penalty and reduced lifespan this causes, some systems do not provide a means of disabling disk write cache (such as the Qnap).
References to these problems can be found on many forum threads:
Qnap: http://forum.qnap.com/viewtopic.php?f=142&t=8826
Netgear: viewtopic.php?f=20&t=20435&start=60&st=0&sk=t&sd=a
Synology: http://www.synology.com/enu/forum/viewt ... 26&p=47101
AVSForum: http://www.avsforum.com/avs-vb/showthread.php?t=1080005
macrumors: http://forums.macrumors.com/showthread.php?t=571843
Ubuntu: http://ubuntuforums.org/showthread.php?t=933053
Slashdot: http://hardware.slashdot.org/comments.p ... d=25458241
Amazon: http://www.amazon.com/review/product/B0 ... ewpoints=1
The most informative thread may be found on Seagate's own support forum, where it appears Seagate is blaming everyone but themselves for the problem:
http://forums.seagate.com/stx/board/mes ... ing&page=1
* dropping out of RAID configurations for no apparent reason
* being ejected from a RAID configuration due to read / write errors
* freezing for up to 30 seconds
These problems have been reported on Linux, Vista, XP, and OS X and appear to be related to how the drives flush their write cache. In many cases, the drives work fine for days or weeks before problems appear. In my case, I bought five of these for my Qnap TS-509 Pro and they worked great for about two weeks under various read / write loads. Since then, I've had all three of the problems mentioned above on different drives and they are growing progressively worse. The latest problem was three of the five drives disappearing from the RAID5 volume while I was attempting to copy the files to a different NAS.
A work-around that has been successful for some is to disable the disk write cache. Other than the obvious performance penalty and reduced lifespan this causes, some systems do not provide a means of disabling disk write cache (such as the Qnap).
References to these problems can be found on many forum threads:
Qnap: http://forum.qnap.com/viewtopic.php?f=142&t=8826
Netgear: viewtopic.php?f=20&t=20435&start=60&st=0&sk=t&sd=a
Synology: http://www.synology.com/enu/forum/viewt ... 26&p=47101
AVSForum: http://www.avsforum.com/avs-vb/showthread.php?t=1080005
macrumors: http://forums.macrumors.com/showthread.php?t=571843
Ubuntu: http://ubuntuforums.org/showthread.php?t=933053
Slashdot: http://hardware.slashdot.org/comments.p ... d=25458241
Amazon: http://www.amazon.com/review/product/B0 ... ewpoints=1
The most informative thread may be found on Seagate's own support forum, where it appears Seagate is blaming everyone but themselves for the problem:
http://forums.seagate.com/stx/board/mes ... ing&page=1
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