Secondary storage is recommended for backup data to ensure backups do not reside on primary storage.

The consolidated cluster uses vSAN for primary storage, and VMware recommends the use of secondary storage for backup.

Table 1. Secondary Storage Design Decisions

Decision ID

Design Decision

Design Justification

Design Implication


Use a secondary storage solution for management and workload backup data.

Separate primary virtual machine storage from backup data in case of primary storage failure.

Secondary storage is required.


The secondary storage used must provide adequate size and I/O for backup operations to finish during the scheduled backup window.

The backup and restore process is I/O intensive.

The backup retention process is a storage constrained operation.

The secondary storage solution has an impact on the backup and restore SLA.