Without (raid/jbod) controller ?

Le mer. 8 nov. 2023 à 18:36, Peter <peter...@raksmart.com> a écrit :

> Hi All,
>
> I note that HDD cluster commit delay improves after i turn off HDD cache.
> However, i also note that not all HDDs are able to turn off the cache.
> special I found that two HDD with same model number, one can turn off,
> anther doesn't. i guess i have my system config or something different
> setting with two HDDs.
> Below is my command to turn off the HDD cache.
>
> root@lahost008:~# sdparm --set WCE=0 /dev/sdb
>  /dev/sdb: ATA ST10000NE000-3AP EN01
> root@lahost008:~# cat /sys/block/sdb/queue/write_cache
>  write through
>
> I also tried sdparm to run "sdparm --set WCE=0 /dev/sdb" I got the same
> result.
>
> Anyone experienced this can advise?
>
> Thanks a lot
>
>
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