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Forum Discussion
XRaid on old ReadyNas 2150
I have an older ReadyNAS that I plugged in 8 years and pretty much forgot about it. Two 500 gb drives. I sort of understand the XRAID concept but I don't understand how if I insert a new drive, say a...
Your disks are in RAID1, also called mirror. Everything that's on the first one is on the second one. There is no master, they're just the same.
RAID provides disk redundancy (it's in the name), it's not a backup. To keep it simple, if you delete something by mistake on your volume, it's deleted from both drives (at the same time), so unless you have a backup, you can't recover it.
If you want to replace both drives by bigger ones:
1. Backup your data, just in case.
2. Replace one drive by a bigger one.
3. Leave the RAID complete resync (rebuild the new drive based on the other drive).
4. Replace the other drive.
5. Once the initial RAID resync is complete, vertical expansion should occur. You may need to perform a (graceful) reboot to trigger it.
Also, the biggest disk your duo can handle is 2 TB.
I recommend updating the firmware before you expand - the current firmware is 4.1.15. There's a check-for-updates function in the admin web ui.
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