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To: mr.mark who wrote (17063)	3/1/2001 3:17:42 PM
From: PMS Witch	Read Replies (2) \| Respond to of 110626

If your disk controller has two places to connect a cable, and I was a gambling person, I'd bet that you'd get better performance with two cables, one to each disk, than one cable going to both disks. I can picture both disks trying to send data over the same cable at the same time, with electrons butting heads as they try to pass in opposite directions: They'd arrive really irritated. Perhaps your card has two channels, if so, you may want to exploit this bit of added hardware. Cheers, PW. P.S. CHANNELS I picked this term up yesterday when looking through some URLs on controllers. I don't have a clue about what it's all about, but thought I'd throw it into my post: Give it some weight and make me sound informed. (It works for others.)

To: mr.mark who wrote (17063)	3/1/2001 5:55:49 PM
From: tanstfl	Read Replies (1) \| Respond to of 110626

Hi Mark, Here is a link that explains the IDE configuration options and restrictions in more detail: pcguide.com I am not very familiar with IDE RAID (SCSI is not that much more expensive and, at this point, is less proprietary in nature). However, if you look at the adaptec IDE RAID controller ( adaptec.com ), you will note that it implements 4 channels and each drive MUST be set as a master on its own channel. My guess would be that the UDMA raid setup you heard about has a RAM cache and lazy writes, has sequential writes (unbeknown to the user), or uses a proprietary superset of the IDE standard. Steve