Customer want to modify the cache side for HDD diskpool (all VM, shared pool, block storage have been remove), and it is set as 50g by default. Customer used 3000G SSD disk as cache side , but it only 12 HDD hard disks in the server. It is a huge waste, so they want to modify the cache side to more than 200G.
The cache size cannot be modified directly. You can only delete the hard disk pool first, and then reset the cache size when rebuilding the hard disk pool. When there is only one hard disk pool, you cannot delete the hard disk pool, and you can only choose to reinstall UIS HCI. Customers have HDD + SSD and full SSD hard disk pools, so they can delete the HDD + SSD hard disk pool that needs to be modified.
Before deleting HDD + SSD hard disk pool, you need to remove all VM, shared pool, block storage in the diskpool, and unmount the hard disk used by the hard disk pool from the host. The specific operations are as follows:
After deleting the hard disks in the hard disk pool, you can delete the hard disk pool:
Then create a new hard disk pool and select 250g cache size:
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