SOLVED Strange performance issues

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rvassar

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Ultrastar He8's should support TLER, it just might not be on. [/CODE]

Interesting... None of my HGST drives had it enabled. Here I thought the NAS line would have it enabled.

Are these settings persistent, or do we need to do something further to make it persistent?
 

HoneyBadger

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Running that for any of the He8s just returned some version information about smartctl.

I'm guessing they're behind a SAS HBA and it's not passing the command through nicely. I'll have to look into how to query that behind there, it's escaping me right now. Were they SATA or SAS drives?

Are these settings persistent, or do we need to do something further to make it persistent?

Unfortunately you'll have to reset TLER every time the drive power-cycles if it doesn't default to being enabled.
 

HoneyBadger

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They should probably have TLER enabled by default then. Maybe it was a mechanical failure or something that didn't throw an error badly enough to fail the drive, but just enough to drag performance down to a snail's pace.
 
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