Modify SAN Storage Configuration

After SAN storage is added, you can edit its name and description, modify the disk preallocation policy, adjust the SAN storage allocation strategy, or modify the data storage overcommit ratio as needed. For SAN storage expansion, see Expand SAN Storage.

Common Entries

You can modify SAN storage configuration from the following entries:

Go to the target SAN storage page and click Actions > Edit Name and Description.
Go to the target SAN storage page, click Actions > Modify Advanced Settings.

Common Operations

Operation	Description
Edit Name and Description	Modify the name and description of SAN storage.
Modify Disk Preallocation Policy	Sets the disk preallocation policy for SAN storage. Default: metadata. metadata: Preallocates only the space required for volume metadata and does not allocate space for data. With this policy, storage space required for the volume is dynamically allocated as data is written. none: Does not use a preallocation policy.
Modify SAN Storage Allocation Strategy	Sets the placement strategy for volumes and snapshots on SAN storage LUNs. Default: Allocate by device name. Available policies include allocating by device name, creating volumes on the LUN with the most remaining capacity, and creating volumes on the LUN with the fewest volumes.
Modify Data Storage Overcommit Ratio	Controls the allocatable data storage space for virtual machines. Calculation formula: `Data storage allocatable capacity = [(actual capacity - reserved capacity) × overcommit ratio] - (threshold capacity + sum of all volumes allocated to virtual machines + snapshots + image cache + migration cache)`

PreviousModify NFS Storage Configuration NextDistributed Storage Configuration Management