Date: Thu, 10 Feb 2000 11:09:47 -0800 From: "Scott Hess" <scott@avantgo.com> To: <freebsd-questions@freebsd.org>, "Jon Rust" <jpr@vcnet.com> Subject: Re: Vinum questions Message-ID: <0ea901bf73fa$65c76d90$1e80000a@avantgo.com> References: <v04210123b4c8b1545f95@[209.239.239.22]>
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"Jon Rust" <jpr@vcnet.com> > My 2 choices: > > 1) Stripe and mirror. Gives 18G of storage, and best performance > that still has protection against drive failure. Not the most > efficient use of my drives, however. > > 2) RAID-5 all 4 of the drives in one volume. 27G of storage. Decent > performance. But... stability of RAID-5 in vinum? Make sure that RAID5 still meets your performance needs when rebuilding a drive. When we were deciding between RAID5 and RAID0+1 (on a hardware SCSI-SCSI controller), most of the performance tests came out reasonably close to each other - except when rebuilding a drive. There, RAID0+1 took a relatively minor hit, but RAID5 dropped our tps to 1/4 of the normal amount, meaning we couldn't rebuild a drive during peak usage. Later, scott To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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