HP D2D .HP D2D Backup System user guide (EH985-90907, March 2011) - Page 19

HP StoreOnce, Backup System Installation and Configuration Guide

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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 Emulation types for tape devices on page 17. 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. Total No of Cartridge Slots: 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. Number of drives: The default number of drives is determined by the Emulation Type that you have selected. If you increase the number of drives be careful not to exceed the maximum number of libraries and drives that a host can physically access. (64 for iSCSI interfaces and 128 for FC interfaces.) Backup System user guide 19

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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
Emulation types
for tape devices
on page 17. 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.
Emulation Type
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.
Drive Emulation
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.
Total No of Cartridge Slots:
The default number of drives is determined by the Emulation Type that you
have selected. If you increase the number of drives be careful not to exceed
the maximum number of libraries and drives that a host can physically access.
(64 for iSCSI interfaces and 128 for FC interfaces.)
Number of drives:
Backup System user guide
19