You should only use 1 drive per IDE channel, set up as master. The way IDE is designed, a broken slave might well bring the whole channel down. You also don't want to use different interface standards / speeds on the same channel, as the channel (bus) will autonegotiate to the highest (hopefully) common standard / speed. DVD:s and CD-ROM:s are typically slower than hard drives. So, only one drive per channel, CD / DVD on a separate channel and if you want maximum security, even spread your drives across two or more IDE / SATA controllers. Cheers /Niclas
From: Pieter Hulshoff
To: John Andersen CC: suse-linux-e@suse.com Subject: Re: [SLE] Which motherboard/RAID controller for home file-server? Date: Tue, 3 Aug 2004 11:18:22 +0200 On Tue, Aug 03, 2004 at 01:08:38AM -0800, John Andersen wrote:
On Monday 02 August 2004 03:48 am, Louis Richards wrote:
I would buy two additional IDE cards so each drive is by itself on a channel. I always mirror boot and swap. The rest can be RAID 5.
Actually that's not totally necessary, as long as two drives in the SAME Array do not share a controller.
So if he was planning two arrays anyway, he could use all of the Masters in one array, and all the slaves in the other array.
(make sure the newer/larger/faster disks are masters and older/smaller/slower disks are slaves.
The current idea is as follows (using a HPT 454 PCI card, 4 channels, 8 devices):
M S IDE1 OS DVD IDE2 MD0 HPT1 MD0 HPT2 MD0 HPT3 MD0 HPT4 MD0
leaving 5 slave ports for a later extention (where I will most likely switch the old array to the slaves, and place the newer (bigger) drives to the masters). Comments?
Regards,
Pieter Hulshoff
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