Re: Test disk reliability (or HGST HTS721010A9E630 surprisingly reliable)

On 12/20/15 1:09 PM, Félix GERZAGUET wrote:
> After reading
> http://www.postgresql.org/docs/current/static/wal-reliability.html, I
> tried the recommended diskchecker.pl
> <http://brad.livejournal.com/2116715.html> but I am not satisfied:
>
> I always get:
> Total errors: 0
>
> even if I tested with with a HGST HTS721010A9E630 that the vendor's
> datasheet
> (http://www.hgst.com/sites/default/files/resources/TS7K1000_ds.pdf)
> advertise as "
> Designed for low duty cycle, non mission-critical applications in
> PC,nearline and consumer electronics environments, which vary
> application to application
> "
>
> Since it is not, a high end disk, I expect some errors.

Why? Just because a disk isn't enterprise-grade doesn't mean it has to
lie about fsync, which is the only thing diskchecker.pl tests for.
--
Jim Nasby, Data Architect, Blue Treble Consulting, Austin TX
Experts in Analytics, Data Architecture and PostgreSQL
Data in Trouble? Get it in Treble! http://BlueTreble.com