Data Protector NDMP Integration Quickstart Guide
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StoreOnce Backup System is connected using
the data network.
System.
Backup flexibility
It is a simple process to include and exclude
files and directories for backup through the
Data Protector GUI.
Standard dump format enables control over
what is backed up via file and directory
exclusion policies implemented using vendor-
specific environment variables.
Backup throughput
Depends upon the „front end‟ performance of
the filer to the clients: the protocol used and
filer connections to the data network (10 GbE),
and the design of the backup infrastructure.
Protection can be configured using multiple
backup objects to enable multiple parallel
backup streams to be written to the StoreOnce
Backup System for best performance.
Depends on the „back end‟ performance of the
filer to the StoreOnce Backup System (8 Gb
Fibre Channel), and the performance of the
backup format (dump). Multiple virtual tape
drives (one per backup object) can be used to
enable multiple parallel backup streams during
backup to be written to the StoreOnce Backup
System for best performance. Data Protector
supports load balancing for NDMP backups for
optimal virtual drive usage.
Backup data
deduplication
(for a given data set
and change rate)
The key variable is the block size set in Data
Protector – larger block sizes have higher
deduplication ratios.
Test results show that the block size set in Data
Protector and the NDMP BLOCKING_FACTOR
have no significant effect on the deduplication
ratio.
StoreOnce Backup
System backup targets
supported
All; virtual tape drives via FC or iSCSI, and the
Data Protector File Library on the NAS Share.
Requires a virtual tape target. Connectivity is
over FC because there is no iSCSI support on
filers.
Restore flexibility
All or selected files and directories are restored
to their original or an alternate location.
All or selected files and directories are restored
to the same or alternate locations on the same
filer or the same model of the filer if the
HISTORY environmental variable is set to
“YES”.
Data Protector licensing
(assuming this is a new
installation)
For backup and recovery management:
Cell Manager
Disk Agents (no cost)
Media Agent (no cost)
For the StoreOnce Backup System:
Advanced Backup To Disk license for the
usable capacity of the appliance
---- or ----
Drive and Slot licenses for virtual tape
libraries used
For backup and recovery management:
Cell Manager
NDMP Media Agent (no cost)
Direct Backup Using NDMP license for the
capacity of protected data on the filer
For the StoreOnce Backup System:
Advanced Backup To Disk license for the
usable capacity of the appliance
---- or ----
Drive and Slot licenses for virtual tape
libraries used
Configuring Data Protector block size and the NDMP blocking factor
Within the limits of the backup device, the Data Protector block size determines the size of the blacks
(data units) processed. The backup device processes data in the specified block sizes. The block size
is specified as backup device parameter as shown in Figure 16.
The default block size value for all devices is 64 kB. Increasing the block size can improve backup
performance and the deduplication ratio for regular file system backup. For NDMP backup, changing
the block size has no significant effect on deduplication ratios.