From: Phil Turmel <philip@turmel.org>
To: John Stoffel <john@stoffel.org>, Linux-RAID <linux-raid@vger.kernel.org>
Subject: Re: WD Red vs Black drives for RAID1
Date: Mon, 16 Nov 2015 13:28:12 -0500 [thread overview]
Message-ID: <564A203C.1020309@turmel.org> (raw)
In-Reply-To: <22090.1097.258820.65463@quad.stoffel.home>
On 11/16/2015 11:28 AM, John Stoffel wrote:
>
> Guys,
>
> I'm starting to get tons of errors on my various mixed 1 and 2Tb
> drives I have in a bunch of RAID 1 mirrors, generally triple mirrors.
> It's time to start replacing them and I think I want to either go with
> the WD Black 4Tb or the WD Red 4Tb drives. And with a pair of 500Gb
> SSDs to use with lvmcache for speedup.
>
> Any comments?
The data sheet for the Blacks implies that they do *not* have TLER, also
known as ERC. This is vital for proper operation out-of-the-box in any
Linux Raid environment, with the exception of raid0.
Search the archives for "timeout mismatch" for detailed explanations why
this is important.
The Red family does have ERC and will work properly.
Phil
next prev parent reply other threads:[~2015-11-16 18:28 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-16 16:28 WD Red vs Black drives for RAID1 John Stoffel
2015-11-16 17:05 ` Another Sillyname
2015-11-16 17:35 ` John Stoffel
2015-11-16 17:27 ` Jens-U. Mozdzen
2015-11-16 17:32 ` John Stoffel
2015-11-16 17:44 ` Jens-U. Mozdzen
2015-11-17 5:04 ` Brad Campbell
2015-11-16 17:45 ` Robert L Mathews
2015-11-16 19:50 ` John Stoffel
2015-11-16 18:07 ` Wols Lists
2015-11-16 18:28 ` Phil Turmel [this message]
2015-11-16 19:52 ` John Stoffel
2015-11-16 20:02 ` Phil Turmel
2015-11-16 20:16 ` John Stoffel
2015-11-16 20:55 ` Wols Lists
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