StorageWorks DLT 10/20-GB Cartridge Tape Drive
1–2
Order Number: EK–SM1TB–UG. E01
maximum speed and recording highly compressible data). In a host-based configuration,
proper choice of system processor, cache, hard drive, adapters, and backup software can help
to approach this throughput rate. Host SCSI IO or other computer-intensive operations on the
host CPU will tend to reduce throughput to tape, however.
Figure 1–1 Front Panel of 10/20-GB DLT Cartridge Tape Drive
When data is being passed from or to client workstations in a client-server environment, ad-
ditional parameters having to do with reduced local area network bandwidth, network traffic,
or lower client workstation performance characteristics will also tend to reduce maximum
throughput to the tape drive.
1.3
Data Tape
1.3.1 CompacTape III Description
The CompacTape III cartridge is a 4-1/8-inch square, dark gray, plastic cartridge, containing
1200 feet of 1/2-inch magnetic, metal particle (MP) tape. A write-protect slide switch on the
front surface lets you select between two positions:
WRITE
-
ENABLED
(switch moved to the
right), which lets the tape drive write data on the tape, and
WRITE
-
PROTECTED
(switch moved
to the left), which prevents the tape drive from writing over data you want to preserve (See
Figure 1–2).
