Re: Sonnet tempo E4P and Fussion D500P

Nick -
there is an old expression. If you keep playing with something, you will eventually break it.

SO ONE MORE TIME. Lets start with box A. RAID 2 of the drives, and do tests. If it works, leave it alone. Raid 3 of the drives in Box A (same box). If it works leave it alone. Using Apple Disk Utility, delete your 2 raid groups, and raid all 5 drives together. Do the tests again - does it work ? If it works, leave it alone. Don't touch it anymore.

If it doesn't work, there is a problem with either one of the drives or the box itself.

What I suspect is going on, is that you are popping in drives in and out, with power on, and the RAID's are not mounting. After every combo you should REBOOT your MAC. I know that it SHOULD mount, but it sometimes doesn't.

The problem will not be the E4P card. You either have a bad chassis or a defective intermittent disk drive. One bad connector in the 500P chassis can cause this problem as well, but it may be intermittent.

From your description, you have something bad going on in Sonnet Chassis A, where it looks like Chassis B is always ok (is this correct ? ). If this is correct, leave chassis B alone, and do tests with just A, by trying one or 2 drives at a time. You will soon find out if it's a bad slot or a bad drive.

You have spent DAYS on this by now. If you just work methodically, and don't rush, you will find your problem, instead of panicing.

Bob Zelin