It's worth checking to see if there's a certified list of drives approved for use with your enclosure. Most companies that produce RAID/NAS boxes list a range of drives that they have tested with their products.
With my Sonnet RAID there were drives which were specifically excluded from the approved list. Sometimes these drives had to have a certain firmware versions to have approval. I did notice that most of the drives were the so-called 'enterprise drives' which are considerably more expensive. To quote from the Sonnet list...
"Sonnet Technologies has qualified and specifies the hard drives listed here for use in Fusion storage systems. These drives were chosen for their superior performance, error handling, and reliability characteristics, especially when used in RAID groups. Sonnet recommends the use of these Enterprise/RAID edition hard drives and select, Sonnet certified desktop hard drives in your Fusion storage system to ensure system reliability and performance. STANDARD DRIVES MAY NOT BE SUPPORTED AND MAY DEGRADE SYSTEM RELIABILITY AND PERFORMANCE".
I have read that there have been problems with people trying to run 'green' drives in RAID setups. These drives are designed to save power by going into a semi-sleep mode, or even spinning down. This can cause the RAID monitoring hardware to report errors. It's worth noting that other drives like the WD RED drives, run slower than 7200rpm which may reduce your data throughput or access speeds.
Bruno
Posted by: bruno@mansi.demon.co.uk
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