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Replace original removed HD after failed disk upgrade?
Hi, We have a ReadyNAS Duo which had 2 x Seagate 500GB HDs set up as a redundant RAID disk with 500GB available storage. It was becoming full, so I checked the hard disk compatibility list and orde...
if you install disk-1 powered down (slot-2 empty) you will have the old state. Don't leave disk-2 in, as then the NAS will think it has a synced RAID array when it doesn't. hot-inserting disk 2 will sync disk 2 to the disk-1 (keeping you at the old state).
Hot-installing disk-1 might possibly fail (since the new disk-1 is 2 TB), I am not sure. The volume size is still 500 GB, so the xraid scripts might be ok. If it works, that would sync disk-1 to disk-2 (so you'd be in the newer state).
The basic principle is that every hot-insert is treated as a new disk - the NAS runs a disk test, and if it passes reformats it, then resyncs the raid array. But if the NAS is powered down during the insertion, then if it recognizes the format on boot-up it will treat it as an existing disk in the array. If it doesn't like the format, then it will usually treat it as a new disk (though it might simply fail to boot).
Hot-installing disk-1 might possibly fail (since the new disk-1 is 2 TB), I am not sure. The volume size is still 500 GB, so the xraid scripts might be ok. If it works, that would sync disk-1 to disk-2 (so you'd be in the newer state).
The basic principle is that every hot-insert is treated as a new disk - the NAS runs a disk test, and if it passes reformats it, then resyncs the raid array. But if the NAS is powered down during the insertion, then if it recognizes the format on boot-up it will treat it as an existing disk in the array. If it doesn't like the format, then it will usually treat it as a new disk (though it might simply fail to boot).
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