On Sep 4, 2007, at 9:31 PMSep 4, 2007, Modulok wrote:

Before I invest significantly more time into my current gmirror
issues, I have but two simple questions for anyone out there:

1. Has anyone used gmirror for the root partition and been able to
successfully boot with one failed (or un-plugged) disk? It's the
latter part of the question that is the real issue for me. I'm just
looking for a confirmed "it's possible".

2. If yes, what version of FreeBSD, what brand/model of hard disks,
and what mainboard was used?

We have been using gmirror on some Dell systems for a while now, and we put it through it's paces before we deployed it to production. We pulled drives while the system was running, rebooted, the works.

We found gmirror to be pretty fault tolerant and were not able to get it to fail. If you pull your main drive, the system was always able to successfully boot from the second drive. Rebuilding was always possible, as well.

Our tests were done on older Dell PowerEdge 1650's with Fujitsu SCSI drives. I don't know specifically what model/manufacturer the motherboard is.

If there's any other questions, feel free to ask!
Eric F Crist
Secure Computing Networks

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