Quantum DXi6900 User Manual page 223

Chapter 9: Configuration
VTL Configuration
the type of physical library to emulate and configure virtual tape drives and storage slots.
The number of virtual tape drives (VTDs) totaled across all configured partitions must not exceed a
maximum value. The maximum number of VTDs allowed varies depending on the system configuration:
DXi6900 - 512 VTDs (no more than 160 VTDs active at any one time)
l
Additional Information
The maximum number of virtual tape drives allowed per VTL partition is 160 VTDs.
l
A license key for 160 VTDs is pre-installed on all DXi6900 models. To obtain a license for additional
l
VTDs, contact Quantum customer support.
A virtual tape drive is considered active if a cartridge is loaded in the VTD. Make sure to configure the
l
backup application software so that the maximum number of active VTDs is not exceeded at any time.
Exceeding the maximum number of active VTDs may cause backup jobs to time out.
If you plan to replicate partitions to another DXi, make sure that every partition name and barcode
l
number on each DXi is unique. There cannot be duplicate partition names or barcode numbers on the
DXi6900 or on a DXi receiving a replicated partition.
Caution: Make sure the backup application on the host is configured for the correct number of tape
drives and storage slots emulated by the VTL partition. If you do not, the backup application might not
operate correctly.
To add a VTL partition:
1. Click Add.
The Add VTL Partition & Replication Settings page displays (see
Quantum DXi6900 User's Guide
Figure 143 on the next page).
223