Do 7.2k SATA drives and a hardware raid controller always end with trouble?

Posted by xelco52 on Super User See other posts from Super User or by xelco52
Published on 2012-12-07T15:56:11Z Indexed on 2012/12/07 17:12 UTC
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hard-drive

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raid

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sata

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storage

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freenas

I'm reading the FreeNAS userguide and came across the statement:

Note that hardware RAID configured as JBOD may still detach disks that do not respond in time; and as such may require TLER/CCTL/ERC-enabled disks to prevent drive dropouts.

I'm using a '3Ware 9550SX-8LP RAID Controller' and see quite a few stories of people successfully running raid5 on 7.2k consumer SATA drives without issue.

Are detached disks only a theoretical problem, or should I expect this to be a common occurrence?

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