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On Wed, May 9, 2012 at 9:39 AM, Pandu Poluan <pandu@××××××.info> wrote: |
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> |
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> On May 9, 2012 7:36 PM, "Mark Knecht" <markknecht@×××××.com> wrote: |
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>> |
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>> As for RAID, +100 to not use them. The WD Green drives do not support |
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>> time-limited error recovery (TLER) and spin down based on their view |
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>> of trying to save power. For me anyway they simply didn't work well in |
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>> any RAID configuration. I switched my home compute server to |
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>> Enterprise drives which have worked perfectly for 2+ years. |
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>> |
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> |
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> I can understand how 'green' drives can fcuk up hardware RAID arrays. |
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> |
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> But what about software RAID, e.g., dmraid? Can't we just configure it to be |
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> 'more forgiving'? |
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> |
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> Rgds, |
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|
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Possibly. Someone with more experience with mdadm probably could do a |
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better job but I'd never done RAID of any type at that time (I'm just |
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a home user who taught myself whatever little I know about Linux |
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through this list) and built this server with 5 drives to run a number |
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of Windows VMs so I was pretty sure I wanted RAID. I bought the WD |
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Green 1TB drives a little over 2 years ago and had multiple problems. |
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First problem was the 4K sector size issue which was fairly new at |
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that time, and then once I got past that I tried RAID and it still |
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didn't work well at all. |
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|
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The best answer at the time was some piece of low level software from |
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WD called something like wdtwiddle or something silly as I remember it |
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but I decided to cut my storage in half and replaced the 1TB Green |
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drives with 500GB Enterprise drives. |
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|
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Since then I've heard of people using Green drives for RAID and doing |
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fine but it didn't work with the ones I purchased. |
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- Mark |