From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?UTF-8?Q?Micha=C5=82?= Sawicz Subject: Re: Several steps to death Date: Tue, 26 Jan 2010 19:12:26 +0100 Message-ID: <1264529546.30742.95.camel@test.apertos.eu> References: <55f050077e86adeb1f4acca87cace12b.squirrel@www.dcsnow.com> <4B5EB5BD.7070406@shiftmail.org> <5931ac0a02f59a2a2e1db82c630ff474.squirrel@www.dcsnow.com> <4B5EEFD7.2080407@shiftmail.org> <37bfaf9c6cbe90557cdef839be3ff20f.squirrel@www.dcsnow.com> <1264517763.30742.88.camel@test.apertos.eu> <4eae8d29d5e663323c7be0a31c8b6262.squirrel@www.dcsnow.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg="pgp-sha1"; protocol="application/pgp-signature"; boundary="=-HlRBkX/YD3G1JFEO7L9+" Return-path: In-Reply-To: <4eae8d29d5e663323c7be0a31c8b6262.squirrel@www.dcsnow.com> Sender: linux-raid-owner@vger.kernel.org To: aragonx@dcsnow.com Cc: linux-raid List-Id: linux-raid.ids --=-HlRBkX/YD3G1JFEO7L9+ Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Dnia 2010-01-26, wto o godzinie 12:48 -0500, aragonx@dcsnow.com pisze: > My thinking this morning is to setup a 2nd server with the 5 750GB > disks > and leave that as a software RAID. Then I would purchase 2 2TB disks > for > my current server and just use them as-is. Remember that if you lose any of the 2TB disks, you lose all data on that disk. With those 5 disks in a RAID5 array, you can safely replace any of them, without losing any data. > Throughput is a concern though. I currently was getting 50MB/sec over > the > network. This was okay but I really wanted to get that up to 75MB/sec > or > more. =46rom a RAID5 array (when reading) you should get more than from one, even faster, disk. Remember that with a RAID5 data is read sequentially from N-1 disks (where N is the number of disks in your array). Writing can be a bit slower due to parity calculation that needs to occur. I would stay with the software RAID setup, but it seems you should try and read some more about it. Remember to use some monitoring tools like smartd and mdadm --monitor that will shout at you when there are problems. --=20 Cheers Micha=C5=82 (Saviq) Sawicz --=-HlRBkX/YD3G1JFEO7L9+ Content-Type: application/pgp-signature; name="signature.asc" Content-Description: To jest =?UTF-8?Q?cz=C4=99=C5=9B=C4=87?= =?UTF-8?Q?_wiadomo=C5=9Bci?= podpisana cyfrowo -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.12 (GNU/Linux) iEYEABECAAYFAktfMIoACgkQzQlUjpZYlbdaWQCeM+FqrXFvXZmKqYa2EtzaadrS OsUAoKoUIrxtSaxaJrK31SjURWFsA6AA =uQLH -----END PGP SIGNATURE----- --=-HlRBkX/YD3G1JFEO7L9+--