HP B6960-90078 manual Configuring Library Devices

Configuring and Using Backup Devices

Configuring Library Devices

	Configuring Library Devices
What Are Library	SCSI-II library devices, also called autoloaders, are large backup devices.
Devices?	They contain a number of media cartridges in a device’s repository and
	can have multiple drives handling multiple media at the same time.
	Most library devices also allow you to configure automatic drive cleaning,
	which is performed by Data Protector when the drive gets dirty. Refer to
	“Drive Cleaning” on page 61.
	A library device has a SCSI ID for each drive in the device, and one for
	the library robotic mechanism. This mechanism moves media from slots
	to drives and back again. For example, a library with four drives has five
	SCSI IDs, four for the drives and one for the robotic mechanism.
Slot Number	Each slot in the device’s repository holds one medium. Data Protector
	assigns a number to each slot, starting from 1. When managing a library,
	you refer to the slots using their numbers. For example, a library with 48
	repository slots has slot numbers 1, 2, 3, 4, 5, 6...47, 48.
Drive Index	The drive index identifies the mechanical position of the drive in the
	library. Refer to Figure 2-4.
	The index number is relevant for the robotics control. The robot knows
	only index numbers and has no information about the SCSI address of
	the drive. The drive index is a sequential integer (starting from 1) which
	has to be coupled with the SCSI address of this drive. For example, for a
	four-drive library, the drive indexes are 1,2,3,4.
	If you have only one drive in the library, the drive index is 1.
Drive SCSI	The drive index must match the corresponding SCSI address. This
Address	means that you need to configure the pairs as follows:
	SCSI address_A for index 1,
	SCSI address_B for index 2, and so on.

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