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Forum Discussion
Is exchanging two disks within an X-RAID2 array safe?
Hi there, first post on the Netgear Forum.
After a couple of years of light use my ReadyNAS Ultra 4 tells me there's a problem with disk 1 and I've lost redundancy. I have a suspicion that the...
Readybear wrote:
I have a suspicion that the fault lies with the NAS unit rather than the disk.
I'm wondering why you are thinking this.
You can adapt Sandshark's process a little to sort this more quickly - you can test disk 1 in a PC with Seatools (or with WD Lifeguard) while you are testing the bays with a scratch disk. BTW, if the issue is with bay 1, then you might need to do the factory install with the scratch disk in slot 2.
Thanks for the reply.
When I boot the unit without any disks I get an error message and can't approach the unit with my browser. If I add a scratch drive I get another error: could not mount root RAID d. Makes sense.
Is it normal that the unit doesn't boot w/o any drives? Should I boot w/ the scratch drive and do a FACTORY REBOOT to be able to setup the unit w/ that. Will the Readynas Ultra 4 remember and recognize my precious RAID array later on? I'm really afraid of losing the whole array!
Last question: does the order of the drives in the array matter at all. I've numbered my drives and won't mess up but I'm just really curious about this.
When I boot the unit without any disks I get an error message and can't approach the unit with my browser. If I add a scratch drive I get another error: could not mount root RAID d. Makes sense.
Is it normal that the unit doesn't boot w/o any drives? Should I boot w/ the scratch drive and do a FACTORY REBOOT to be able to setup the unit w/ that. Will the Readynas Ultra 4 remember and recognize my precious RAID array later on? I'm really afraid of losing the whole array!
Last question: does the order of the drives in the array matter at all. I've numbered my drives and won't mess up but I'm just really curious about this.
Readybear wrote:
Is it normal that the unit doesn't boot w/o any drives?Yes. The system boots from the disks.
Readybear wrote:
Should I boot w/ the scratch drive and do a FACTORY REBOOT to be able to setup the unit w/ that. Will the Readynas Ultra 4 remember and recognize my precious RAID array later on? I'm really afraid of losing the whole array!The operating system and configuration is installed onto the drives. So there is no benefit in using a scratch disk in this way.
Readybear wrote:
Last question: does the order of the drives in the array matter at all. I've numbered my drives and won't mess up but I'm just really curious about this.The order shouldn't matter. But it is sometimes easier to troubleshoot if order is preserved - especially when disks are being swapped.
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