Using IBM LTO Ultrium with Open Systems - RS/6000 Home

The Tape capacity is 100 GB per cartridge in native format, and using (2:1)
compression is 200 GB. The Ultrium drives have maximum sustained data rates
of 15 MB/s native and 30 MB/s at 2:1 compression. Of course, the real achieved
performance depends on many other system variables.
The tape library is designed for easy expansion. It can accommodate from one to
six tape drives and from 18 to 72 cartridges. There are three Library Models:
L18, L36, and L72. The cartridge capacity of the Model L18 is 18 cartridges, the
Model L36 is 36 cartridges, and the Model 72 is 72 cartridges. Models 18 and 36
can be field upgraded to hold 72 cartridges. Cartridge expansion is in increments
of 18 cartridges. One IBM Ultrium drive is required and five additional drives are
available for factory or field installation. Upgrade features are modular units that
are easy to install. If you are NOT using the integrated SAN Data Gateway, then
direct attached SCSI drives may be any mixture of LVD or HVD up to a total of
six. The tape library input/output (I/O) station enables cartridges to be inserted
and removed without disrupting library operation. There are two I/O station
options: a single slot option and a 12 slot option. The 12 slot I/O station is
required to achieve the 72 cartridge maximum library configuration. With the 12
slot I/O station feature the library can be configured as 72 storage slots, or 60
storage slots and 12 I/O slots.
The Remote Management Unit (RMU) comes standard in every library shipped
after July 27, 2001. The unit can be added to pre-existing libraries by ordering the
chargeable upgrade Feature Code 1660. The RMU provides an Ethernet port, so
that the library can be configured as a TCP/IP device on the network. Library
status can be sent to the network as Simple Network Management Protocol
(SNMP) traps. The StorWatch Specialist enables network access (via Web
browser) to the library for more detailed status and control. All library operator
panel functions can be accessed using the StorWatch Specialist. We provide
detailed information on the StorWatch Tape Library Specialist for the 3583 in
2.9.1, “IBM 3583 StorWatch Specialist” on page 76.
The SAN Data Gateway Integrated Module is another available, chargeable
library feature. The gateway provides the ability for SCSI devices in the library to
connect into a SAN infrastructure. With 2 Gigabit port speeds, this library is ready
for the next generation of 2 Gigabit Fibre Channel devices. It can also run at 1
Gigabit port speeds if attached to 1 Gigabit Fibre Channel devices. Two Fibre
Channel ports make multiple attachments easy and support failover redundancy.
The Gateway has two Fibre Channel interfaces or ports and four SCSI interfaces
or ports. The Fibre Channel ports are equipped with 2 Gigabit, SC-style
shortwave multimode Gigabit Interface Converter (GBIC) modules. The Fibre
Channel ports are capable of communicating reliably at distances of up to 300 m
over 50 µm multimode-optical fiber cables. The four SCSI ports are Ultra2, low
voltage differential (LVD), with VHDCI-style connectors (Very High Density Cable
Interconnect), so be sure to order the LVD version of the LTO drive.
Chapter 1. Introduction to LTO Ultrium with UNIX 11