Zdenek Kotala wrote:
> Bruce Momjian wrote:
> > Zdenek Kotala wrote:
> >> I add few sentences how to write cache works on Solaris platform.
> >
> > I have updated our documentation with the attached patch. I was able to
> > verify all the information in this change.
>
> Thanks.
>
> > I changed your original wording because the statement that UFS turns off
> > write cache seemed unclear because the file system seems independent of
> > the disk write cache. (What happens if you have UFS and ZFS on the same
> > drive?)
>
> You are right UFS does not modify (write) cache setting and it is usually
> disabled by default on most disks. If ZFS and UFS are on same disk, than ZFS
> don't enable disk cache. It is a reason why put ZFS on separate disk is better. See
> http://www.solarisinternals.com/wiki/index.php/ZFS_Best_Practices_Guide#Storage_Pools
>
> > Anyway I think the attached wording is fine.
>
> Yes, it is.
>
> Zdenek
>
> PS: There are some articles about ZFS.
>
> http://www.solarisinternals.com/wiki/index.php/ZFS_Best_Practices_Guide
> http://www.solarisinternals.com/wiki/index.php/ZFS_Evil_Tuning_Guide
> http://www.solarisinternals.com/wiki/index.php/ZFS_for_Databases
>
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Bruce Momjian <bruce@momjian.us> http://momjian.us
EnterpriseDB http://postgres.enterprisedb.com
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