IBM RS/6000 7025 Personal Computer User Manual


 
General Information for 4.0GB 4-mm Tape Drive
The 4.0GB 4-mm tape drive is a streaming tape drive that is used to:
Save and restore system data files.
Archive important records.
Distribute operating system software upgrades.
The 4-mm tape drive can be attached to any system using a single-ended interface
meeting the Small Computer System Interface ll (SCSI-ll) Standard ANSI
X3.131-199X Rev. 10h.
The 4-mm tape drive has the following features:
Capacity of 4.0 GB per cartridge. 8 GB is typical with data compression and with
DDS2 data cartridges.
The actual capacity per cartridge varies depending on the application and the
type of data cartridge being used.
Data transfer rate is 400 KBps. 800 KBps is typical with data compression.
Note: Data compression activated is the default setting from the factory. Data
compression is usually controlled by the application software.
Read and write of DDS|||| tape cartridges in 2.0 GB per cartridge format.
A status light that indicates when it is time to clean the tape path.
Internal diagnostics that are activated when the 4 mm Diagnostic Cartridge is
inserted and loaded into the drive.
Media recognition system: only data grade media can be written with this tape
drive.
The 4-mm tape drive uses a 4-mm data cartridge for saving and restoring your
system data. The 4-mm tape drive writes and reads only 4-mm Digital Data Storage
(DDS|||| or DDS2) cartridges.
Chapter 2. Using the System Unit 2-31