Dell PowerVault DL2200 CommVault - Manual (Page 7)

Dell PowerVault DL2000 Remote Office Backup Strategy
Page 5
FIGURE 1: REMOTE SINGLE INSTANCE BACKUP USING THE REPLICATED DISK
LIBRARY
Note that the SIDB itself is not replicated; only the single-instanced data path content is replicated. The
SIDB is required for checking the uniqueness of an object only when writing it to the first mount path. The
SIDB is not required when reading the object for recovery; hence, there is no need to replicate the SIDB
to provide read access from the replicate dataset. Dell recommends backing up the SIDB using File
System iDA.
Service Pack 2 also includes updates for automatic configuration of a replicated disk library with DDR
replication pairs. Single instancing needs to be enabled on the Storage Policy copy separately.
Additionally, data transfer options like encryption and compression are also available. The section entitled
“DDR Configuration” provides more details.
Note: DDR uses the same installation package and set of binaries as CDR; however, these binaries can
operate only in one of two modes: CDR or DDR. Enabling DDR on the media agent disables the ability to
perform continuous replication operations.
DDR Configuration
Prerequisites
1. Make sure the system requirements for CDR are met on both the media agents that will be
part of DDR.
2. Install media agents with operating system compatibility on the two servers.
3. Install CDR agents on each of the two servers.
4. Do not create any replication pairs.
5. Apply the latest Service Pack for Simpana.