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Note:
LTO-5, 6, and 7 drives can read two generations back and write one
generation back. LTO-8 drives can read and write one generation back.
For best capacity and performance, always use cartridges of the same
generation as your drives.
Bridged Tape Drives
A bridged drive provides a single, unified control and data communication path
between the library/partition and the host using the SAS or FC drive interface.
A non-partitioned library requires one bridged drive. A partitioned library requires one
bridged drive per partition. You select the bridged drive during library configuration.
•
Code versions earlier than 2.0 support two partitions, and a maximum of two
bridged drives located in the Base Module.
•
Code version 2.01, and later, supports up to eight partitions and bridged drives
located in designated Expansion Modules.
You must connect the bridged drive to an HBA supporting multiple LUNs (also referred
to as LUN scanning). The SL150 Library uses a single SCSI ID and two logical unit
numbers (LUN). LUN 0 controls the tape drive and LUN 1 which is configured as a
SCSI medium changer device controls the robotics. Data is sent to the remaining LUN
on the bridged drive or to LUNs on the other, unbridged drives in the partition, all of
which are configured as SCSI sequential-access (tape) devices.
Related Topics
•
Update the library configuration using the wizard, update library firmware, and
manage the library's certificate.
Library Managed Encryption (LME)
The library can manage encryption for IBM LTO-6 and higher drives.
With library code 3.50 or above, the library can manage enrollment and key delivery
for IBM LTO-6 and higher drives. Each drive that you enroll still requires an encryption
activation file. However, with LME, the library is the OKM agent instead of individual
drives, meaning you only need to enroll the library with OKM rather than individual
drives. Enabling LME globally enables encryption for all IBM LTO-6+ drives within the
library regardless of the partitioning configuration. You will still need to use VOP to
enroll HP LTO drives.
Related Topics
•
OKM provides data security by creating, storing, and managing the encryption
keys for stored data.
•
Configure Library Managed Encryption (LME)
Configure LME to have the library manage the encryption enrollment and key
delivery of all IBM LTO-6 or higher drives.
Chapter 7
Bridged Tape Drives
7-2