SMART on some drives can actually cause them to perform more poorly. SATA drives in a SATP enviroment will lock the entire PHY when a request has been made (blocking IO to all other drives on the same shared PHY). Given this can sometimes take SECONDS for a SMART journel to populate and return this can result in timeouts, bus crashes and other nasty things. Polling smart too hard is actually bad, and can murder performance, or create false failures in devices.
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Thronic
This thread over at Spiceworks made me curious.
The residential guru on storage writes:
Anything real to this in a DP type setup?
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