ZFS & disk cache

From: Scara Maccai <m_lists(at)yahoo(dot)it>
To: pgsql-general <pgsql-general(at)postgresql(dot)org>
Subject: ZFS & disk cache
Date: 2009-06-01 07:22:21
Message-ID: 864618.54231.qm@web24601.mail.ird.yahoo.com
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"The Solaris ZFS file system is safe with disk write-cache enabled because it issues its own disk cache flush commands"

Could someone explain?
would that mean that I checking the disk cache with "format -e" on Solaris is not needed if I use ZFS????

Thanks

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