
JULY 2007 MAGNUM 224, MAGNUM 448, STORAGELIBRARY T24, OR STORAGELOADER 2U
2-3
RELATIONSHIP TO THE SCSI BUS
2.1.1 ELEMENT TYPES
The Magnum 224, Magnum 448, StorageLibrary T24, or StorageLoader 2U
LTO includes four types of elements:
The library maintains current information about each element in its cartridge
inventory, which is stored in memory.
2.1.2 ELEMENT ADDRESSES
Each of the elements in the library requires an address so it can be identified
by SCSI commands. Figure 2-1, Figure 2-2, Figure 2-3, Figure 2-4, Figure 2-5,
Figure 2-6, and Figure 2-7, shows the default addresses assigned to each
element in the library.
Note: The default element addresses are identical to the element indexes. The
library uses element indexes to identify the library elements when
performing diagnostic operations from the operator panel.
You can use the MODE SELECT command to change the address of each
element in the library, as described in Chapter 9, “MODE SELECT (15h).
Magnum 224, T24, or SL 2U Element Addresses
The following illustrations show the Magnum 224, T24, or SL 2U element
address with two different configurations.
Element Description
Medium transport The cartridge handling mechanism (robot) is the medium
transport element. This mechanism moves the cartridges
between the tape drive(s) and the storage cells.
Storage
(slots/cells)
a
Magnum 224 or T24—24 storage elements
SL 2U—20 storage elements
Magnum 448—48 storage elements
Data transfer A tape drive is a data transfer element that reads and writes
data as requested by the host.
Magnum 224, T24, or SL 2U—one or two data transfer
elements
Magnum 448—one, two, three, or four data transfer
elements
Import/Export
a
Magnum 224, T24, or SL 2U—one I/E port element
Magnum 448—two I/E port elements
a
The storage slots/cells increase or decrease based on the I/E Ports setting (enabled or disabled). Disabling
the I/E Ports increase the storage slot/cell count. You can also assign slot/cell 2 as a “fixed” cleaning slot
(see the Magnum 224, StorageLibrary T24, or StorageLoader 2U LTO Library Product Manual or the
Magnum 448 LTO Library Product Manual).
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