Choosing a deployment location for a NetVault SmartDisk Instance
The third step in defining your NetVault SmartDisk Deployment Strategy is deciding where you want to deploy your NetVault SmartDisk Instances. Whether the NetVault SmartDisk Instance is enabled for deduplication dictates the available deployment options.
Reviewing deployment options for NetVault SmartDisk Deduplicated Instances
Multiple vRanger servers cannot target the same repository. For this reason, in environments with one or more vRanger servers, you must deploy a NetVault SmartDisk Instance for each vRanger server.
NOTE: You cannot
deploy multiple NetVault SmartDisk Instances on the same machine.
Defining a NetVault SmartDisk Storage Pool strategy
The fourth step in defining your NetVault SmartDisk Deployment Strategy is defining your strategy for the NetVault SmartDisk Storage Pools.
Understanding space allocation for NetVault SmartDisk Storage Pools
Before choosing a strategy for your NetVault SmartDisk Storage Pools, consider the following regarding how NetVault SmartDisk allocates space in the NetVault SmartDisk Storage Pools:
Using the volume-size
parameter, you can set aside a portion of the volume so that it cannot be used for NetVault SmartDisk. After the volume is full with NetVault SmartDisk or non-NetVault SmartDisk data, NetVault SmartDisk does not store anything else on the volume until space is made available.
If the LRT
is large enough, NetVault SmartDisk properly allocates space when multiple Staging Store and Chunk Store processes are both writing to a volume that becomes too full. NetVault SmartDisk maintains an overall idea of how much space is used both by the Staging Store and the Chunk Store. This allows it to enforce the licensed amount of capacity and to enforce the LRT
and the volume-size
User thresholds and the NetVault SmartDisk LRT
do not affect licensing. Licensing measures the amount of data accepted for protection by the NetVault SmartDisk Instance, regardless of whether the data has been deduplicated.
The following figure shows a graphical example of how space is organized in NetVault SmartDisk. This figure assumes that all volumes are mapped to one file system. Also, the space reserved for LRT is reserved on a per-volume basis; if your configuration uses multiple volumes, more LRT space might be allocated.
Figure 1. Space allocation for NetVault SmartDisk