Seagate STT8000A Manual download pdf (Page 54)

Chapter 5 ATAPI Interface

Page 46 STT8000A Product Manual

Tape Capacity Page Code

The following table presents the Tape Capacity Page layout.

Byte Description Value Meaning

Page Code 31h Tape Capacity Page

Reserved 00h -

2,3

Page Length 00,20h 32 Bytes Following

4,5

Parameter Code 0001h Remaining Capacity, Part 0 Code

Parameter Bits 40h Device Controlled Counter

Parameter Length 04h 4-byte Counter

8-11

Remaining Capacity, Partition 0 Value N,N,N,N

12-15

Parameter: Code, Bits, Length 0002h,

40h,04h

Remaining Capacity, Part 1 Code

16-19

Remaining Capacity, Partition 1 Value N,N,N,N

20-23

Parameter: Code, Bits, Length 0003h,

40h,04h

Maximum Capacity, Part 0 Code

24-27

Maximum Capacity, Partition 0 Value N,N,N,N

28-31

Parameter: Code, Bits, Length 0004h,

40h,04h

Maximum Capacity, Part 1 Code

32-35

Maximum Capacity, Partition 1 Value N,N,N,N

The Remaining Capacity for non-current partitions shall be the same as the

Maximum Capacity for that partition. Capacities are multiplied by 1024 to determine

the number of bytes. These values are conservative estimates.

The Parameter bit, TSD (not shown), is zero implying that the drive can save

parameters across resets, etc. Parameters are not saved but are re-computed

correctly from any logical position, regardless of the previous states of the tape

drive.

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Seagate STT8000A Manual Page 54