Date: Sun, 16 May 2010 13:37:57 -0700 (PDT) From: Simun Mikecin <numisemis@yahoo.com> To: Jeremy Chadwick <freebsd@jdc.parodius.com> Cc: freebsd-fs@freebsd.org Subject: Re: Quick ZFS mirroring question for non-mirrored pool Message-ID: <657328.88413.qm@web112409.mail.gq1.yahoo.com> In-Reply-To: <20100516015850.GA55302@icarus.home.lan> References: <4BEF2F9C.7080409@netscape.net> <4BEF3137.4080203@netscape.net> <20100516001351.GA50879@icarus.home.lan> <alpine.GSO.2.01.1005151937300.12887@freddy.simplesystems.org> <4BEF4A73.8060905@netscape.net> <20100516015850.GA55302@icarus.home.lan>
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----- Original Message ----
> From: Jeremy Chadwick <freebsd@jdc.parodius.com>
> To: Kaya Saman <SamanKaya@netscape.net>
> Cc: freebsd-fs@freebsd.org
> Sent: Sun, May 16, 2010 3:58:50 AM
> Subject: Re: Quick ZFS mirroring question for non-mirrored pool
>
> Also, please reconsider going with Western Digital
> RE4 2TB drives. These drives are all "GP" (Green Power) drives, which you do
> not want. There have been numerous reports on the FreeBSD mailing lists
> about problems with these drives (repeated head offloading/parking
> causing problems in RAID arrays), and yes, it applies to Enterprise class
> drive as well; WD has indirectly confirmed the problem in one user's case
> by sending him a "fixed" firmware. I can point you to threads if you
> want to read them.
Well, there are two types of WD RE4 enterprise drives: "RE4" and "RE4 GP". Only "RE 4GP" is a "Green Power" drive. "RE4" is a performance drive spinning at 7200rpm (and I believe it is currently fastest enterprise 2TB drive on the market).
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