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On Wednesday 16 March 2011 09:53:37 Florian Philipp wrote: |
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> Am 15.03.2011 07:50, schrieb Matthew Marlowe: |
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> >> My problem is that LVM2 is not supported in parted which is the |
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> >> recommended tool to deal with this. |
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> >> |
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> >> I suspect I only need to map the individual PE to a particular start |
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> >> sector on each drive, not btrfs, but then there is stripe/block sizes |
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> >> to |
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> >> consider as well ... WD also are recommending 1mb sector boundaries |
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> >> for |
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> >> best performance - I can see a reinstall coming up :) |
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> > |
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> > I have on my workstation: |
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> > 2 WD 2TB Black Drives |
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> > 5 WD 2TB RE4 Drives |
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> > |
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> > Some notes: |
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> > - The black drives have horrible reliability, poor sector remapping, and |
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> > have certain standard drive features to make them unusable in raid. I |
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> > would not buy them again. I'm not sure how similar the green drives |
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> > are. |
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> |
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> Green drives also seem to be affected: |
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> http://doug.warner.fm/d/blog/2009/11/Western-Digital-15TB-Green-Drives-Not-y |
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> our-Linux-Software-RAID |
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I have 6 Green drives (WDC WD15EARS) in a RAID5 and I have not seen any |
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issues. |
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Only issue I saw was 1 drive with "reallocated" sectors as also mentioned by |
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one of the commenters on that page. |
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Replaced that drive and no further problems so far. |
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I did, however, spent time to align the sectors correctly for the Raid- |
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partitions, striping, LVM blocksize and the mkfs-statements. |
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Without those, performance was really bad. |
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I would prefer to see proper support for 4K-sector-size drives. |
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-- |
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Joost |
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