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Originally Posted by Phoenix32
I disagree, and can back it up with experience...
This "tad bit of delay" is exactly the problem. Striped RAID arrays are sensitive to timing. Anyone who has spent a great deal of time using Striped RAID arrays will tell you this.
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Well, I think we are not going to agree on this one, despite the diatribe... I am not against good data conservation practices. I simply assume that anyone who is going to try something that is not supported by the manufacturer, realizes that they need to protect themselves.
I have had a bunch of experince with arrays of all types. SAN's, FCAL, SCSI, SATA, PATA and even SASI for those who remember those. I have not seen any timing problems with ATA arrays beyond the normal ATA experience.
If we really want to get picky about this, ARRAYS should really have all spindles synchronized. But, nobody really bothers with this nowadays, and everyone assumes that they can mix and match drives as they see fit. ATA arrays work best with all drives the same brand model and firmware revision. All equal parts.
In the initial discussion I only asked for any feedback on any use of the adapters. My statement about drive timings is also from experience.. (I graduated from college in 1977 and have been in the industry ever since - ~30 years or so). But, I don't screw around with multiple vendors and such. Wait, that is not quite true. On my Clariion ARRAYS, I do mix certified drives from Seagate, Fujitsu and Hitachi... but this is all FCAL/SCSI based stuff and Clariion does the drive and firmware certifications, so, I think I can be forgiven for mixing here...
At any rate, I don't really have a problem with you disagreeing... I just don't agree with all you said...