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Expanding ReadyNAS 104
Hi, I have a 4TB in my slot1 for now, but would like to expand with some HDDs i found recently, the problem is, all of them are not equal. So i have a 2TB, 3TB, 4TB (Currently in slot1) and a fou...
The slot order doesn't matter.
The capacity rule is "sum the disks and subtract the largest". So your current 2TB+3TB+4TB should give you 5 TB - shown as ~4.5 TiB on the web admin ui. You aren't able to use 1 TB of space on the 4 TB drive. The way to maximize space is to get another 4 TB drive. That would give you 9 TB (shown as ~8.18 TiB in the web ui).
Note that you don't have RAID protection when you are adding a disk - so Netgear recommends a full backup before you do that. I agree with that advice (and would add that everyone should have a backup plan in place, since RAID isn't enough to keep your data safe).
The slot order doesn't matter.
The capacity rule is "sum the disks and subtract the largest". So your current 2TB+3TB+4TB should give you 5 TB - shown as ~4.5 TiB on the web admin ui. You aren't able to use 1 TB of space on the 4 TB drive. The way to maximize space is to get another 4 TB drive. That would give you 9 TB (shown as ~8.18 TiB in the web ui).
Note that you don't have RAID protection when you are adding a disk - so Netgear recommends a full backup before you do that. I agree with that advice (and would add that everyone should have a backup plan in place, since RAID isn't enough to keep your data safe).
Note that if you are planning on expanding the current array (keeping the data you already have on the NAS), you cannot add any drives smaller than the current one and have them all in RAID. To use that combination of drives, you'll need to save off the data and either destroy and re-create the volume, or do a whole Factory Default with all drives in place. If you just destroy the volume, you'll also need to un-install any apps and re-install after the new volume is created. If you go with the factory default, you can save your configuration file, too. But make sure you re-install any apps before you restore the configuration.
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