Date: Fri, 5 Mar 2004 13:03:55 +0000 From: Lewis Thompson <purple@lewiz.net> To: Tony Frank <tfrank@optushome.com.au> Cc: FreeBSD-questions <questions@freebsd.org> Subject: Re: Growing RAID5 (using RAID0). Message-ID: <20040305130354.GB1458@lewiz.org> In-Reply-To: <20040305122817.GA2655@marvin.home.local> References: <20040226141514.GA32107@lewiz.org> <20040305122817.GA2655@marvin.home.local>
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--Pd0ReVV5GZGQvF3a Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Fri, Mar 05, 2004 at 11:28:17PM +1100, Tony Frank wrote: > On Thu, Feb 26, 2004 at 02:15:14PM +0000, Lewis Thompson wrote: > > i.e. can I create a RAID0 volume from two RAID5 volumes? > > I understand this might sound a little odd but if it works it would be > > the ideal solution for me. I would also be interested in hearing how > > other people might have overcome this problem of growing a large RAID5 > > volume. >=20 > As you didnt post anything about your implementation I can only guess. > If you are using hardware raid5 for each disk set and it cannot do raid0= =20 > on top you could look at using software raid0 to join the two hardware > sets. Eg vinum can do raid0 in software over raid5 in hardware. > =20 > If you are doing this purely in software it will depend on what software > you use. If using vinum I believe you can only mirror across two (or mor= e) > raid5 plexes, so probably not what you want to do. Yes. I forgot to specify but this was going to be purely software RAID. I've recently had a little trouble buying a hardware ATA raid card (I was shipped an incorrect model and lost out about GBP 100!) so until then I'm software only. I looked at (I think) raidframe (?) and this /appeared/ to support this functionality but I wasn't sure if it was something Vinum was also able to do. It seems you have clarified this for me. Thanks a lot! -lewiz. --=20 I was so much older then, I'm younger than that now. --Bob Dylan, 1964. ------------------------------------------------------------------------ -| msn:purple@lewiz.net | jabber:lewiz@jabber.org | url:www.lewiz.org |- --Pd0ReVV5GZGQvF3a Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (FreeBSD) iD8DBQFASHq6Itq0KFQv7T8RAiprAKC/8aPvSCfQpjfRtMaxundseuS5JQCgykKN 3Co/7bU6aw0cjwqdAq9uRgg= =k5fF -----END PGP SIGNATURE----- --Pd0ReVV5GZGQvF3a--
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