HP StoreOnce D2D4324 HP D2D25xx, 41xx and 43xx Backup System user guide (EH985 - Page 13

Libraries, slots and storage capacity, Source and target libraries, To view device details

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Libraries, slots and storage capacity It is recommended to: • Only configure the libraries that you need • Only configure the number of cartridges that you are likely to need You can add cartridges at a later date to expand the system and remove individual blank cartridges from a library without deleting the whole library, but cannot remove cartridges that have been written to. Source and target libraries Target libraries are created if you have a replication license when you create a replication mapping. Source libraries are always visible to the host; Target libraries are not normally visible to the host, but you can configure devices to make them visible to backup applications. This feature should be used with care because some backup applications will fail if they are able to see duplicate cartridge barcodes in two libraries simultaneously. Target libraries for replication may be created with 0 drives. To view device details Click on a device in the top half of the page to view its details in the bottom half of the page, where you can also edit and delete details. There are three tabs with device information. See Device tabs (page 13). To create a new device 1. To create a new device for the host, click on Create library. 2. Enter the appropriate details in the Libraries tab and click Create. There is also a tab to enable and configure iSCSI Authentication, if this is required. Any information you enter on this tab must match the information that you have configured in the iSCSI Initiator itself. (See the HP StoreOnce Backup System Installation and Configuration Guide for more information about configuring the iSCSI initiator.) Table 3 Device tabs (lower half of the page) Libraries tab Library Name Emulation Type Drive Emulation This is the name that is used to identify that device. You may like to enter a name that identifies the host or backup job with which it is associated. This is the emulation type used by the backup software. The HP StoreOnce Backup System supports a number of emulation types, see (page 11). 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 Devices (Virtual Tape Devices) 13

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Libraries, slots and storage capacity
It is recommended to:
•
Only configure the libraries that you need
•
Only configure the number of cartridges that you are likely to need
You can add cartridges at a later date to expand the system and remove individual blank cartridges
from a library without deleting the whole library, but cannot remove cartridges that have been
written to.
Source and target libraries
Target libraries are created if you have a replication license when you create a replication mapping.
Source libraries are always visible to the host; Target libraries are not normally visible to the host,
but you can configure devices to make them visible to backup applications. This feature should be
used with care because some backup applications will fail if they are able to see duplicate cartridge
barcodes in two libraries simultaneously.
Target libraries for replication may be created with 0 drives.
To view device details
Click on a device in the top half of the page to view its details in the bottom half of the page,
where you can also edit and delete details. There are three tabs with device information. See
Device tabs (page 13)
.
To create a new device
1.
To create a new device for the host, click on
Create library
.
2.
Enter the appropriate details in the Libraries tab and click
Create
. There is also a tab to enable
and configure iSCSI Authentication, if this is required. Any information you enter on this tab
must match the information that you have configured in the iSCSI Initiator itself. (See the
HP
StoreOnce Backup System Installation and Configuration Guide
for more information about
configuring the iSCSI initiator.)
Table 3 Device tabs (lower half of the page)
Libraries tab
This is the name that is used to identify that device. 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 used by the backup software. The HP StoreOnce Backup System
supports a number of emulation types, see
(page 11)
. The emulation type determines how
Emulation Type
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
Devices (Virtual Tape Devices)
13