From mboxrd@z Thu Jan 1 00:00:00 1970 From: Steven Haigh Subject: Re: problems formatting raid5 Date: Tue, 19 Feb 2013 09:59:12 +1100 Message-ID: <5122B240.6060000@crc.id.au> References: <30093318.24.1361225731112.JavaMail.root@zimbra> Mime-Version: 1.0 Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha1; boundary="------------ms030004050104030607020103" Return-path: In-Reply-To: <30093318.24.1361225731112.JavaMail.root@zimbra> Sender: linux-raid-owner@vger.kernel.org To: linux-raid@vger.kernel.org List-Id: linux-raid.ids This is a cryptographically signed message in MIME format. --------------ms030004050104030607020103 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: quoted-printable On 19/02/2013 9:15 AM, Roy Sigurd Karlsbakk wrote: >> that's like BASE jumping with a large umbrella, as earlier noted. >> Don't do that, it'll just hurt you. At least use RAID-5 and preferably= >> use more RAID sets and RAID-0 or LVM on top. > > Make that RAID-6 I agree. I think a more sane outlook on this would be 19 drives made up o= f: * RAID Level: 6 * Hot Spares: 2 Using RAID5 then its not a matter of if you are going to lose your=20 array, its a matter of WHEN considering the number of spindles here. If you have the drives in separate enclosures or different controllers,=20 have one spare per controller - ie don't but both spares on the same=20 controller. *Maybe* if you are pushed for space, only use 1 hot spare - but be sure=20 to have a drive sat in the anti-static bag on a shelf within walking=20 distance of the server. -- Steven Haigh Email: netwiz@crc.id.au Web: https://www.crc.id.au Phone: (03) 9001 6090 - 0412 935 897 Fax: (03) 8338 0299 --------------ms030004050104030607020103 Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic Signature MIAGCSqGSIb3DQEHAqCAMIACAQExCzAJBgUrDgMCGgUAMIAGCSqGSIb3DQEHAQAAoIIMdTCC BjQwggQcoAMCAQICAR4wDQYJKoZIhvcNAQEFBQAwfTELMAkGA1UEBhMCSUwxFjAUBgNVBAoT DVN0YXJ0Q29tIEx0ZC4xKzApBgNVBAsTIlNlY3VyZSBEaWdpdGFsIENlcnRpZmljYXRlIFNp Z25pbmcxKTAnBgNVBAMTIFN0YXJ0Q29tIENlcnRpZmljYXRpb24gQXV0aG9yaXR5MB4XDTA3 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