HP StoreOnce D2D4324 HP StoreOnce VSA user guide (TC458-96002, July 2013) - Page 16

Device Details tab, Table 3 Libraries parameters top half of Table 4 Device Details tab

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Table 3 Libraries parameters (top half of page) (continued) Parameter Description Port This identifies the port to which the host is connected for backup and restore. User Data Stored This is the amount of user data stored on the library. Size on disk This is the actual size on disk (after deduplication). Dedupe ratio This is the deduplication ratio achieved on the data on the library. Device Details tab This tab shows device information for the selected library. Users with an Admin login may carry out the following tasks from this tab: • Create a library (page 17) • Edit a library (page 18) • Delete a library (page 19) • Make Replication Target libraries visible to the host (page 26) Table 4 Device Details tab Field Library Name Emulation Type Drive Emulation Total Number of Cartridge Slots: Description This is the name that is used to identify that library. You may like to enter a name that identifies the host or backup job with which it is associated. This is the emulation type of the library. The HP StoreOnce Backup system supports a number of emulation types, see also Emulation types for tape device (page 19). The emulation type determines how many embedded drives and cartridge slots are available. For example, if you select HP MSL G3 Series (2x24), the device will emulate an MSL 2024 Library with two embedded tape drives and a possible total of 24 cartridge slots. Consult your backup application technical support information for further details. By selecting a drive emulation type, HP LTO-2, 3, 4 or 5, you set only the default capacity of the cartridges within the library device. (LTO-2 = 200 GB, LTO-3 = 400 GB, LTO-4 = 800 GB, LTO-5 = 1.6 GB.) It does not affect the ability of the backup application to write to the device and tape cartridge capacities can be increased at any time (but not decreased), as long as the cartridge is blank, regardless of the drive generation number. If you have selected D2DBS Generic for the Library Emulation Type, you will be able to select Ultrium VT for the drive emulation. This is a generic Ultrium device which is clearly identifiable as virtual. Backup application support for Ultrium VT is reasonable, but not quite as complete as the D2DBS library type, so its not possible to use it with all backup software. This is where you define the number of slots that you require for your tape rotation strategy. The number of slots available depends upon the Emulation Type that you have selected. Each slot will be automatically populated with a new cartridge upon creation whose capacity is appropriate to the Drive Emulation type. You can change the maximum size of the cartridge as long as it is blank. This means that you can only change the value immediately after the device is created and before it has been accessed by the backup application. 16 VTL (Virtual Tape Libraries) functions

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Table 3 Libraries parameters (top half of page)
(continued)
Description
Parameter
This identifies the port to which the host is connected for backup and restore.
Port
This is the amount of user data stored on the library.
User Data Stored
This is the actual size on disk (after deduplication).
Size on disk
This is the deduplication ratio achieved on the data on the library.
Dedupe ratio
Device Details tab
This tab shows device information for the selected library.
Users with an Admin login may carry out the following tasks from this tab:
•
Create a library (page 17)
•
Edit a library (page 18)
•
Delete a library (page 19)
•
Make Replication Target libraries visible to the host (page 26)
Table 4 Device Details tab
Description
Field
This is the name that is used to identify that library. You may like to enter a name that
identifies the host or backup job with which it is associated.
Library Name
This is the emulation type of the library. The HP StoreOnce Backup system supports a number
of emulation types, see also
Emulation types for tape device (page 19)
. The emulation type
Emulation Type
determines how many embedded drives and cartridge slots are available. For example, if
you select HP MSL G3 Series (2x24), the device will emulate an MSL 2024 Library with two
embedded tape drives and a possible total of 24 cartridge slots. Consult your backup
application technical support information for further details.
By selecting a drive emulation type, HP LTO–2, 3, 4 or 5, you set only the default capacity
of the cartridges within the library device. (LTO-2 = 200 GB, LTO-3 = 400 GB, LTO-4 =
Drive Emulation
800 GB, LTO-5 = 1.6 GB.) It does not affect the ability of the backup application to write
to the device and tape cartridge capacities can be increased at any time (but not decreased),
as long as the cartridge is blank, regardless of the drive generation number.
If you have selected D2DBS Generic for the Library Emulation Type, you will be able to
select Ultrium VT for the drive emulation. This is a generic Ultrium device which is clearly
identifiable as virtual. Backup application support for Ultrium VT is reasonable, but not quite
as complete as the D2DBS library type, so its not possible to use it with all backup software.
This is where you define the number of slots that you require for your tape rotation strategy.
The number of slots available depends upon the Emulation Type that you have selected.
Total Number of
Cartridge Slots:
Each slot will be automatically populated with a new cartridge upon creation whose capacity
is appropriate to the Drive Emulation type.
You can change the maximum size of the cartridge as long as it is blank. This means that
you can only change the value immediately after the device is created and before it has
been accessed by the backup application.
16
VTL (Virtual Tape Libraries) functions