Date: Wed, 16 Feb 2005 09:58:17 -0500 (EST) From: "Ean Kingston" <ean@hedron.org> To: "Peter C. Lai" <sirmoo@cowbert.2y.net> Cc: freebsd-questions@freebsd.org Subject: Re: vinum vs. DPT smartcacheIV raid Message-ID: <3604.216.220.59.169.1108565897.squirrel@216.220.59.169> In-Reply-To: <20050216065700.GB20992@cowbert.2y.net> References: <20050216065700.GB20992@cowbert.2y.net>
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> I have a box with DPT PM2044 SmartCacheIV UW-SCSI PCI cards which can do > RAID-5 in hardware, but I'd have to use the DOS volume manager to set up > the array. I have heard reports that vinum woudl be faster than using the > native card. Is this true? Doubtful, though I have heard that there are some rare special circumstances where software raid can be faster. Given your hardware, you will probably not experience those conditions. > Should I not bother with doing the hardware > raid > and just go with vinum? Use the hardware RAID, especially if you are going to use a simple RAID configuration (like one big RAID-5 virtual disk). Just make sure you have some way of figuring out if one of the disks goes bad. Worst case you could boot off a DOS floppy once in a while to make sure all the disks are still good. > The rest of the system is a k6-2 400mhz with 256mb ram (amount might > change). > I will also have moderate network i/o on the pci bus (obviously). -- Ean Kingston E-Mail: ean_AT_hedron_DOT_org URL: http://www.hedron.org/
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