* Posts by dsmith

3 posts • joined 12 Jul 2010

Google wants new class of taller 'cloud disk' with more platters and I/O

dsmith

Mr

Bring back the Quantum Bigfoot!

How NOT to evaluate hard disk reliability: Backblaze vs world+dog

dsmith

hard error rate

I'd like to point out that Newman seems to misunderstand "hard error rate" as meaning the drive has permanently failed. The actual definition of hard error rate is an error that can not be recovered by a retry. But most of the time, if you write that block with new data, it will hold the new data without any problems.

MTBF is the spec one should use to predict when the drive will become useless but it tends to be a computed value based on guidelines in MIL-HDBK-217F and I would not put a lot of faith in those values.

Drive suppliers hit capacity increase difficulties

dsmith

5.25:

Just go back to 5.25 inch disks. The increase in area is dramatic and it will work with most existing hardware.

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