Different disk size in a node
Hello,
I've 3 disk with 6TB and 1 with 16TB. Put all 4 disks in Tier 0 and enable block storage. For now, I saw the disk usage as around 250GB for each disk. What will happen to disk 4(16TB) when each disk reaches 5.54TB ?
Will it still write to the fourth disk(16TB) or it will bypass this and write it on other node ?
Thank you
What happens to the fourth disk(16TB) ? because it still has space left.
Joni Lee wrote:What happens to the fourth disk(16TB) ? because it still has space left.
That depends on how you configured the storage tiers.
If the others are out of space, in principle, you should perform a manual migration to that 4th disk since you mentioned it has space. Note that automatic data migration between tiers isn't enabled by default, as mentioned in the user guide I posted above.
Once automatic migration is enabled, if a storage tier runs out of free space, Acronis Cyber Infrastructure will attempt to temporarily use the space of the lower tiers down to the lowest. If the lowest tier also becomes full, Acronis Cyber Infrastructure will attempt to use a higher one. If you add more storage to the original tier later, the data temporarily stored elsewhere will be moved to the tier where it should have been stored originally.
For example, if you try to write data to tier 2 and it is full, Acronis Cyber Infrastructure will attempt to write that data to tier 1, then to tier 0. If you add more storage to tier 2 later, the aforementioned data, now stored on tier 1 or 0, will be moved back to tier 2, where it was meant to be stored originally.
I would suggest you raise a ticket and request a detailed explanation from our ACI engineers about these settings and configurations for better clarification: https://kb.acronis.com/content/8153.
Best regards.
Manual migration some of data from disk 1-3 to disk 4 ?
Any KB regarding this ?