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ReadyTIER with ReadyNAS Pro 6
Hi,
I've got a NAS Pro 6-bay system, currently on NASOS 6.9.5 hotfix 1 and loaded with 4 x WD RED 8 TB drives in FlexRAID RAID 5. Primary use case for the unit is as an NFS server for my VMwar...
sstillwell wrote:
So...here's my putting-the-cart-before-the-horse question: Do you know of any reason this shouldn't work when adding a 512 GB RAID1 SSD tier to the existing volume?
It should work in the Pro-6 (though you do need to change to flexraid in order to use ReadyTier).
The main challenge is adapting the trays for the SSDs, and you've already found mounting brackets for that part.
ReadyTier isn't caching the metadata, so if the SSD RAID group fails you will lose the volume. Your SSDs will reach their write limits at the same time. So you might want to replace one of them about half-way through it's expected life, so you can stagger the replacements.
sstillwell wrote:
So...here's my putting-the-cart-before-the-horse question: Do you know of any reason this shouldn't work when adding a 512 GB RAID1 SSD tier to the existing volume?
It should work in the Pro-6 (though you do need to change to flexraid in order to use ReadyTier).
The main challenge is adapting the trays for the SSDs, and you've already found mounting brackets for that part.
ReadyTier isn't caching the metadata, so if the SSD RAID group fails you will lose the volume. Your SSDs will reach their write limits at the same time. So you might want to replace one of them about half-way through it's expected life, so you can stagger the replacements.
Just to confirm...I understand that if the SSD RAID group fails, your volume goes bye-bye, but do I remember correctly reading that you CAN remove the raid group via the UI and the metadata (& data if you're using it) migrate back to the spinning RAID group?
sstillwell wrote:
but do I remember correctly reading that you CAN remove the raid group via the UI and the metadata (& data if you're using it) migrate back to the spinning RAID group?
I don't recall seeing that myself, but it really ought to work that way.
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