From mboxrd@z Thu Jan 1 00:00:00 1970 From: Roman Mamedov Subject: Re: Western Digital Green 3TB SATA3 experiences Date: Wed, 20 Mar 2013 15:29:39 +0600 Message-ID: <20130320152939.480374e9@natsu> References: <1363766982.51496ec6ea41f@mail.inbox.lv> <20130320144805.15140c70@natsu> <1363771292.51497f9ca4fb5@mail.inbox.lv> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=PGP-SHA1; boundary="Sig_/06IJ.V6wX4fDa.y2ih+bTBx"; protocol="application/pgp-signature" Return-path: In-Reply-To: <1363771292.51497f9ca4fb5@mail.inbox.lv> Sender: linux-raid-owner@vger.kernel.org To: Andris Berzins Cc: linux-raid@vger.kernel.org List-Id: linux-raid.ids --Sig_/06IJ.V6wX4fDa.y2ih+bTBx Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable On Wed, 20 Mar 2013 11:21:32 +0200 "Andris Berzins" wrote: > >> Is this because of WD "green" series? > >=20 > > No. >=20 > "Green" series are special because they spin down after 7 seconds and the= y do not > return in timely manner when read error occurs. They do not spin down after 7 seconds, they unload their heads. In any case this behavior is not expected to ever cause Current_Pending_Sectors rising (which are plain and simple unreadable sectors no matter how hard you try or how long you wait). You can disable the 7-second unload time behavior by using either "hdparm -= J" or using "idle3-tools" http://idle3-tools.sourceforge.net/ (also available = in Debian). I would indeed recommend doing that to reduce wear and tear on the head mechanism from constant loads/unloads; but I somewhat doubt this will make a difference in relation to your issue. --=20 With respect, Roman --Sig_/06IJ.V6wX4fDa.y2ih+bTBx Content-Type: application/pgp-signature; name=signature.asc Content-Disposition: attachment; filename=signature.asc -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iEYEARECAAYFAlFJgYMACgkQTLKSvz+PZwhkSACggmosaHtjy0FFcUJXTtZGaMNr +HYAoI2CKUSXgYBiNGau271OBkuV8P8Q =BeF0 -----END PGP SIGNATURE----- --Sig_/06IJ.V6wX4fDa.y2ih+bTBx--