VMware View Manager 4.5 Admin Manual page 88

VMware View Administrator's Guide
Table 5-9. Example of a Sizing Estimate for Linked-Clone Disks Deployed on Selected Datastores
Data Type
OS disks
Persistent disks
Sizing Formulas for Creating Linked Clones When You Edit a Pool or Store Replicas
on a Separate Datastore
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.
Table 5-10 shows the formulas that calculate the estimated sizes of linked-clone disks when you edit a pool or
store replicas on a separate datastore.
Table 5-10. Storage Sizing Formulas for Linked-Clone Disks When You Edit a Pool or Store Replicas on a
Separate Datastore
Data Type
OS disks
Persistent disks
Example of a Storage Sizing Estimate When You Edit a Pool or Store Replicas on a Separate Datastore
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.
Table 5-11 shows how the sizing formulas calculate estimated storage requirements for the sample linked-
clone pool.
88
Selected Free Space Min Recommended
(GB) (GB)
184.23 10 * (2*1GB) +
(2*10GB) =
40.00
28.56 10 * (20% of 2GB) =
4.00
Selected Free Space Min Recommended
(GB) (GB)
Free space on the Number of VMs * (2 *
selected datastores memory of VM)
Free space on the Number of VMs * 20%
selected datastores of persistent disk
Max Recommended
50% Utilization (GB) (GB)
10 * (50% of 10GB + 10 * (100% of 10GB +
1GB) + (2*10GB) = 1GB) + (2*10GB) =
80.00 130.00
10 * (50% of 2GB) = 10 * (100% of 2GB) =
10.00 20.00
Max Recommended
50% Utilization (GB) (GB)
Number of VMs * Number of VMs *
(50% of replica disk + (100% of replica disk +
memory of VM) memory of VM)
Number of VMs * 50% Number of VMs * 100%
of persistent disk of persistent disk
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