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Lowest risk way to swap a drive in RN214
I currently have two 4TB drives in my NAS and would like to swap one of the drives for a new drive. What's the lowest risk way to achieve this? If I remove one of the two existing drives and replace ...
geojay wrote:
I currently have two 4TB drives in my NAS and would like to swap one of the drives for a new drive. What's the lowest risk way to achieve this?
Back up the data before you do it. You should have a backup plan anyway, as RAID just isn't enough to keep your data safe. The only way to do that is to have at least one copy on another device.
geojay wrote:
If I introduce the new drive in addition to the two existing drives, wait for it to sync and then remove one of the original two, what will happen?
Adding a new 4 TB drive will give you an 8 TB volume using RAID-5. Removing any drive after that will result in an 8 TB volume that is degraded (not redundant). Also, the volume would still be non-redundant while the volume is resyncing.
Hot-swapping one of the drives is the best way.
BTW, What size is the new drive? What is the reason for replacing it?
geojay wrote:
I currently have two 4TB drives in my NAS and would like to swap one of the drives for a new drive. What's the lowest risk way to achieve this?
Back up the data before you do it. You should have a backup plan anyway, as RAID just isn't enough to keep your data safe. The only way to do that is to have at least one copy on another device.
geojay wrote:
If I introduce the new drive in addition to the two existing drives, wait for it to sync and then remove one of the original two, what will happen?
Adding a new 4 TB drive will give you an 8 TB volume using RAID-5. Removing any drive after that will result in an 8 TB volume that is degraded (not redundant). Also, the volume would still be non-redundant while the volume is resyncing.
Hot-swapping one of the drives is the best way.
BTW, What size is the new drive? What is the reason for replacing it?
StephenB wrote:
geojay wrote:I currently have two 4TB drives in my NAS and would like to swap one of the drives for a new drive. What's the lowest risk way to achieve this?
Back up the data before you do it. You should have a backup plan anyway, as RAID just isn't enough to keep your data safe. The only way to do that is to have at least one copy on another device.
geojay wrote:If I introduce the new drive in addition to the two existing drives, wait for it to sync and then remove one of the original two, what will happen?
Adding a new 4 TB drive will give you an 8 TB volume using RAID-5. Removing any drive after that will result in an 8 TB volume that is degraded (not redundant). Also, the volume would still be non-redundant while the volume is resyncing.
Hot-swapping one of the drives is the best way.
BTW, What size is the new drive? What is the reason for replacing it?
Thanks, this NAS is already synced with another NAS in another location plus I'll do a local backup immediately before this swap.
I'm replacing one of the two ST4000DM000 drives with a new ST4000VN008 prior to repurposing the ST4000DM000. I figured it was best to have the new and better drive in the more important application...
Thanks for your advice :)
The DM series has been a bit problematic for some when used in a NAS. But mixing one "green" and one NAS-purposed drive may create new problems of it's own due to differences in spin-up times. I'd replace te other DM as soon as I had a chance, and maybe disable spin-down till then.
- Is there a better disk for use in a NAS?
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