Virtual Libraries/Drives/Cartridge Configuration - HP 12000 Design Manual

Table 19 Base Capacity License by VLS Model (continued)
VLS model
VLS6653, 750 GB
drives
VLS9000–series
VLS9200
VLS12X00
If capacity is added to the VLS beyond the above base license level, you must install capacity
upgrade licenses (which you can install via the VLS GUI). There is a different upgrade license for
each VLS range:
Table 20 Adding Capacity Beyond the Base Configuration
VLS model
VLS6000–series
VLS9X00–series
VLS12X00–series

Virtual Libraries/drives/cartridge Configuration

The VLS provides a very flexible virtual library configuration, allowing you to create many more
virtual tapes drives than a physical library could contain (and therefore run many more concurrent
backup jobs), and to create virtual cartridges of any required size. On the multi-node devices such
as VLS9X00 and VLS12X00, you also have the key ability to create a virtual library across the VLS
nodes (see VLS
and capacity if required along with the ability to increase the virtual library performance by adding
more nodes at a later date.
When designing the virtual library configuration keep in mind the following considerations:
The virtual library emulation type can be whatever is certified on the backup application. For
example, Symantec NetBackup certification requires an emulation that is not the same as a
physical library so the "HP VLS" library type is used for this. For other backup applications
any library emulation can be used but generally the "HP ESL-E" is the most flexible emulation
because it can scale to 50,000 slots in firmware version 6.0 and higher (10,000 slots in
firmware versions 3.x and 2.3.1). Remember that the virtual library does not in any way have
to match any existing physical library because it is a brand new library on the SAN. It will
have very different geometry because it will have many more drives and slots than the physical
library and will also have different SAN WWPNs and serial numbers (in other words, it is
not a replacement for the physical library).
You always need to have multiple concurrent backups going to the VLS to achieve maximum
throughput. Therefore, analyze how many concurrent backup jobs will be needed to saturate
the VLS performance and create at least that many virtual tape drives in the virtual library. Do
not create more drives than you need because there is a minor performance impact (5- 1 0%)
if you use the maximum number of drives per node compared to the optimum performance at
4-8 drives per Fibre Channel port.
56 VLS Devices
Base capacity license
Covers the two MSA20 disk array enclosures that come bundled.
Each node adds a base license for one full VLS9000 array (48 drives, 30 TB or 40 TB).
The entry-level VLS9000 7.5 and 10 TB systems do not need additional licenses to add capacity
kits up to the full array configuration.
Each node has zero base licenses and requires capacity licenses for every 10 TB of capacity.
Each node adds a base license for 10 EVA LUNs. The base 2-node VLS12000 kit includes a
5-LUN upgrade license giving a total license of 25 LUNs of up to 2 TB each.
Capacity upgrade license
Enables an additional MSA20 array with 250/500 GB drives or half an MSA20 array with
750/1000 GB drives per license (so you need two licenses to add an MSA20 array with
750/1000 GB drives).
Enables an additional 10 TB VLS9X00 capacity per license.
Enables an additional 2 TB (1 LUN) per license.
Scalability) thus providing a single backup target with the entire device performance