Communicator e3000 MPE/iX Release 6.5 (Non-Platform Software Release C.65.00 (30216-90291)

Chapter 4 101
Data Center Management
TurboSTORE Support for DLT
TurboSTORE Support for DLT
by Uma Bondada
Commercial Systems Division
About the DLT Drives
DLT drives offers the following advantages:
• Faster Backups and more reliable backups
• High capacity (up to 70 GB uncompressed)
• Faster Restore and hence faster disaster recovery
TurboSTORE Products and the DLT
The following Turbostore products support DLT without the fast search option:
About Fast Search on Tapes
The fast search concept is generally used when “restoring” files selectively from the tape.
The MPE/iX environment variable HPFASTSEARCH should be set to TRUE for “fast search”
to happen. Without fast search, files are skipped one at a time until the required file to be
restored is reached. During fast search, a number equalled to the intervening tape marks
or save set marks, between two consecutive files of the “restoreset”, is calculated and
skipped at one shot, to go to the next file to be restored. Fast search greatly improves the
“restore” time.
Fast Search on DLT Tape Drives
MPE/iX 5.5 onwards the fast search on DLT is supported with the installation of the
following patches:
• MPEJXX0 for labelled DLT tapes. (STORE patch)
• MPEJXT7 for unlabeled DLT tapes. (STORE patch)
• MPEKX37 for support of DLT7000 tape drives. (IO patch)
With respect to the different MPE/iX versions, the patches and their versions that need to
Product Number Product Description
31900B FOS Store
B5151AA TurboStore/iX II
B5152AA TurboSTORE/iX 7x24 True Online Backup