View Manager calculates different sizing formulas when you edit an existing linked-clone pool, or store replicas on a separate datastore, than when you first create a pool.

If you edit an existing pool and select datastores for the pool, View Composer creates new clones on the selected datastores. The new clones are anchored to the existing snapshot and use the existing replica disk. No new replicas are created.

If you store replicas on a separate datastore, the other selected datastores are dedicated to linked-clone disks.

In these cases, View Manager does not include space for replicas when it calculates storage recommendations for linked-clone disks.

Storage Sizing Formulas for Linked-Clone Disks When You Edit a Pool or Store Replicas on a Separate Datastore shows the formulas that calculate the estimated sizes of linked-clone disks when you edit a pool or store replicas on a separate datastore.

Storage Sizing Formulas for Linked-Clone Disks When You Edit a Pool or Store Replicas on a Separate Datastore

Data Type

Selected Free Space (GB)

Min Recommended (GB)

50% Utilization (GB)

Max Recommended (GB)

OS disks

Free space on the selected datastores

Number of VMs * (2 * memory of VM)

Number of VMs * (50% of replica disk + memory of VM)

Number of VMs * (100% of replica disk + memory of VM)

Persistent disks

Free space on the selected datastores

Number of VMs * 20% of persistent disk

Number of VMs * 50% of persistent disk

Number of VMs * 100% of persistent disk

In this example, the parent virtual machine is configured with 1GB of memory. The parent virtual machine's disk size is 10GB. A linked-clone pool is created with 10 desktops. Persistent disks are configured as 2048MB in size.

The OS disks are configured on a datastore that currently has 184.23GB of available space. The persistent disks are configured on a different datastore with 28.56GB of available space.

Example of a Sizing Estimate for Linked-Clone Disks When You Edit a Pool or Store Replicas on a Separate Datastore shows how the sizing formulas calculate estimated storage requirements for the sample linked-clone pool.

Example of a Sizing Estimate for Linked-Clone Disks When You Edit a Pool or Store Replicas on a Separate Datastore

Data Type

Selected Free Space (GB)

Min Recommended (GB)

50% Utilization (GB)

Max Recommended (GB)

OS disks

184.23

10 * (2*1GB) =

20.00

10 * (50% of 10GB + 1GB) =

60.00

10 * (100% of 10GB + 1GB) =

110.00

Persistent disks

28.56

10 * (20% of 2GB) =

4.00

10 * (50% of 2GB) =

10.00

10 * (100% of 2GB) =

20.00