Restoring From The Hp D2D Backup System; Restore And Deduplication; Reconnecting To The Hp D2D After Host Failure - HP StorageWorks D2D - Backup Systems User Manual

3. Import the cartridge from the attached tape drive.
• If the tape drive is attached to the HP D2D, use the Web Management Interface to import the
cartridge to the HP D2D mail slot. Then use the backup application to move the cartridge
back into the library slot on the HP D2D and restore data to the host. See Chapter 8.
• If the tape drive is attached to the host, use the backup application to restore data to the host.
See "Using Tape

Restoring from the HP D2D Backup System

This is very easy and fast. Run your backup software and select the files to be restored. Although the
software application is tape-based, the restore performance on your HP D2D Backup System is much
faster than restoring from physical tape.

Restore and deduplication

With data deduplication enabled, the actual restore time from disk is longer because the data chunks
must be reconstructed. Typical speeds are: 80 MB/sec write; 40/50 MB/sec read. However, because
more data can be stored on the disk, restore is still fast because there is no need to retrieve data from
archived media.

Reconnecting to the HP D2D after host failure

Each configured library or tape drive on the HP D2D Backup System is uniquely mapped to a host.
It cannot be seen by any other host on the network. If the host system fails, you must replace it and
reconfigure the mapping of the host to the configured backup device on the HP D2D Backup System.
1. Install the operating system on the host. If possible, give the host the same Computer Name as
the host that failed.
2. Install the backup application on the host.
3.
Run the iSCSI Initiator on the restored host. (See also
174 Restore processes without replication
Attach" on page 147.
"The Microsoft iSCSI Initiator" on page 59.)