HP Data Protector Software Performance White Paper

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Backup and restore designs
Backup environments can be designed using a variety of configurations. The following sections
describe three designs typically used in backup and restore solutions.
Direct attached storage (DAS)
Direct attached storage (see Figure 3) implies that the storage you are backing up to and
restoring from is directly attached to the server through a SCSI or Fibre Channel bus. This can
be a good solution for smaller data centers with only a few servers that do not require the
sharing of a large tape or disk resource. While this solution can provide good performance, it
cannot be leveraged across multiple servers.
Figure 3. DAS