3592 Data Cartridge - IBM TS3500 Introduction And Planning Manual

Capacity scaling is not offered on either of the short length (economy) cartridge
types (JJ or JK), or on the WORM cartridges (JW, JX, JY, and JR). Capacity scaling is
only offered on the JA, JB, and JC cartridge types.
Three important attributes are controlled by the setting of the Capacity Scaling
byte value:
v The total Medium Capacity
v The ability to perform the RABF function on an entire cartridge, including last
v Information about whether the format is segmented. If the format is segmented,
It is important to note that the scaled state and attributes (segmentation, RABF) of
the cartridge format is retained when a cartridge is reformatted between the J1A
and E05 logical formats, although the exact resulting used capacity as a percentage
of full capacity is not identical for all mapped settings.

3592 data cartridge

This section describes the capacity, construction, operation, and components of the
IBM TotalStorage 3592 Enterprise Tape Cartridge.
The 3592 tape drive has a bidirectional read/write head with an Enterprise Tape
3592 format. The 3592 J1A writes or reads eight tracks at a time; the TS1120 tape
drive and TS1130 tape drive write or read 16 tracks at a time. The TS1140 tape
drive writes or reads 32 tracks at a time. The capacity of 3592 data cartridges
varies by drive model and recording format. See the 3592 tape cartridges table in
"Overview of 3592 media" on page 173 for these details.
TS1120 and newer tape drives that are encryption-enabled perform encryption after
compression.
Figure 50 on page 179 shows the IBM TotalStorage 3592 Enterprise Tape Cartridge
and its components.
178
IBM System Storage TS3500 Tape Library with ALMS: Introduction and Planning Guide
condition at the end of the scaled region, just as it would if unscaled tape had
reached the real physical end of the tape.
wraps
a fast-access segment is created on the front part of the tape followed by a larger
remainder segment that occupies the remainder of the tape. The fast access
segment is always filled (written) first, followed by the filling of the remainder
segment. For some applications that want improved access attributes for
partially filled cartridges but still want to use full capacity (if required) without
re-scaling, this option is available.
1
Cartridge case
2
Cartridge bar code label
3
Volume serial (VOLSER) number
4
Label area
5
IBM product label
6
Cartridge door
7
Write-protect switch