Symantec Netbackup; Netbackup General Guidelines - HP StorageWorks 12000 - Virtual Library System EVA Gateway Manual

for i in `seq 0 3`;
do
if [ ${DRVBSY[$i]} -eq 0 ]
then
/usr/omni/bin/omnimm -recycle $BARCODE
/usr/omni/bin/omnimm -export $BARCODE
/usr/omni/bin/omnimm -import ${DRVNAME[$i]} -slot $BCSLOT &
DRVBSY[$i]=1
break
fi
done
if [ ${DRVBSY[0]} -eq 1 ] && [ ${DRVBSY[1]} -eq 1 ] && [ ${DRVBSY[2]} -eq 1 ] && [ ${DRVBSY[3]} -eq 1 ]
then
wait
DRVBSY=( 0 0 0 0 )
fi
done
wait
The above basic example script template can be extended to add error handling or support for multiple
libraries, etc.

Symantec NetBackup

This section includes both general and deduplication guidelines as well as other useful information
for Symantec NetBackup.

NetBackup General Guidelines

The following NetBackup guidelines apply to a VLS regardless of whether deduplication is enabled
or disabled:
• HP VLS Library Emulation: When configuring the VLS for use with NetBackup, select "HP VLS" as
the library emulation. NetBackup requires the use of this emulation in all HP StorageWorks VLS
products for device support purposes.
• Barcode formats: When configuring the barcode formats for the virtual cartridges, do not exceed
eight characters.
• Disable multiplexing: Even though multiplexing is supported, HP does not recommend it for virtual
libraries because of the performance impact on restores and deduplication. Because you can
create additional drives easily in the virtual library and allocate them to Media Servers as necessary,
sufficient backup streams can be concurrently written without requiring multiplexing. Be aware of
the Netbackup Device Manager limitation of 128 tape drives per media server.
• Tape block size: Set the tape block size to 256 KB (maximum supported size) using <install
path>/netbackup/db/config/SIZE_DATA_BUFFERS.
• Storage unit fragment size: Set the storage unit fragment size to default, 1TB, with the box un-
checked.
• Enable multi-streaming: Multi-streaming (a backup job concurrently writing to multiple virtual tape
drives) provides efficient use of bandwidth when data objects reside on different physical
disks/arrays.
• Avoid multiple retention periods per cartridge: Avoid mixing different retention periods on the
same cartridges; this is off by default.
• Number buffers: Set the number of data buffers to 32 or 64 using <install path>/netbackup/
db/config/NUMBER_DATA_BUFFERS.
HP StorageWorks VLS and D2D Solutions Guide 197