
expansion rack, 1 or 2 indicates a controller rack, the number determining how
many HiPPI ports the rack contains. The last two digits will be either 20 (five
drawers in the rack), or 40 (10 drawers in the rack). So, for example, a model 140
would be a controller rack with one HiPPI port and 10 drawers of disk.
A.3 Tape Storage Products
The following section looks at the tape storage products that are available for
attachment to the RS/6000.
A.3.1 Tape Devices
The following tape devices are available.
A.3.1.1 IBM 7206
The 7206 is a standalone 4mm helical scan technology tape device (helical scan
is explained in 2.2.3, “Tape Storage” on page 34). The 7206 ...