The vmlimitperdatastore specifies the maximum number of virtual machines in a data store that can be included in a parallel backup operation.
This option works together with the vmmaxparallel and vmlimitperhost options to optimize the performance of parallel backups, and to reduce the processor load that parallel backs can create on a host in the vSphere infrastructure.
Supported clients
This
option can be used with supported x86_64 Linux clients.
This
option can be used with supported Windows clients.
Options file
This option
is valid in the client system options file (dsm.sys),
in the client options file (dsm.opt) or on the
command line for Backup VM. It can also be included
on the server in a client options set. It cannot be set in the Preferences
Editor.
This option is valid in the client
options file (dsm.opt) or on the command line
for Backup VM. It can also be included on the server
in a client options set. It cannot be set in the Preferences Editor.
Syntax
.-0-----------. >>-VMLIMITPERDatastore-- --+-+---------+-+--------------------->< '-integer-'
Parameters
- integer
- Specifies the maximum number of virtual machines in any one data store, that are included during a parallel backup operation. The maximum that you can specify is 50 VMs. The default is 0 (zero).
- Specifying
0 means that you are not concerned about how many VMs
can be backed up in parallel from a data store. Instead, you want
to limit the maximum number of VMs to include in a parallel backup
by using the value that you specify on the vmmaxparallel option.
The vmlimitperdatastore option is enforced even
when virtual machine data exists in two or more data stores.
Adjust the values of vmmaxparallel, vmlimitperhost, and vmlimitperdatastore to find the values that provide optimal performance for parallel backups, in your environment.
Examples
- Options file
- VMLIMITPERD 5