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Old 12-07-2013, 05:49 AM   #1
krazybob
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Western Digital RE4 Drives vs Western Digital AV Drives


I've been using 3GB/s RE4 drives in RAID 1 and have been happy so far. But I've recently learned of the WD AV drives designed for always on streaming. The RE4's have 64MB caches while the AV drives have a 32MB cache. The 3Ware 9550SXU controllers have their own cache.

Are these better drives for servers?
 
Old 12-07-2013, 07:03 AM   #2
cascade9
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RE is 'RAID Edition'. The 'AV' drives are rebranded/modififed (with different firmware) WD 'Green Power' drives. BTW, there are 64MB cache model WD-AV drives.

http://www.wdc.com/en/products/products.aspx?id=150

For RAID use, the REs are much better. For general non-RAID 'single drive' I'd trust the REs more, but if you arent using RAID then the slightly cheaper WD Black would probably be my choice.
 
Old 12-07-2013, 03:35 PM   #3
krazybob
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Green power drives shutdown to save power. AV drives are intended to spin all the time.
 
Old 12-08-2013, 03:43 AM   #4
cascade9
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By 'shutdown' I guess you mean 'intellipark'?

The AV drives have intellipark just like the 'Green Power' drives.

The RE/Black drives have a longer warranty, and in the case of the REs, higher load/unload cycles (300,000 vs 600,000) and MTBF (1,000,000 vs 1,200,000).(MTBF isnt listed for the 'black' drives anymore).

http://www.wdc.com/wdproducts/librar...879-701250.pdf

http://www.wdc.com/wdproducts/librar...879-771444.pdf

http://www.wdc.com/wdproducts/librar...879-771434.pdf
 
  


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