Interpreting the Internal Element and Statistics Table


Interpreting the Internal Element and Statistics Table


The tape library maintains a 19-element table of the library cartridge inventory and robotics statistics.
The table consists of two parts: the inventory page and the statistics page.
Each table tracks the library's internal inventory by element address.
The following lists the inventory component and its address:

Inventory Component    Element Address
   Cartridge magazine    0 through 9
   Fixed cells    10 through 14
   Drive A    116
   Drive B    117
   Bar code reader    17
   Shuttle    132

   I ADDRS LABEL LEPOVDSR X DATM  X LST Z DTM Z LAST TOLSTP R  I SNS ASC ASQ
   0     0       00101000     26      0     0      0      0 0 FF   0   0   0
   1     1 B0003 11111000      0      0     0      0      0 0 FF   0   0   0
   2     2       00101000     26      0     0      0      0 0 FF   0   0   0
   3     3       11111000      0      0     0      0      0 0 FF   0   0   0
   4     4       00101000      0      0     0      0      0 0 FF   0   0   0
   5     5       00101000      0      0     0      0      0 0 FF   0   0   0
   6     6       00101000      0      0     0      0      0 0 FF   0   0   0
   7     7       00101000      0      0     0      0      0 0 FF   0   0   0
   8     8       11111000      0      0     0      0      0 0 FF   0   0   0
   9     9 B0021 10111000    -26      0     0      0      0 0 FF   4  40  C2
  10    10 C0017 10111000      0      0     0      0      0 0 FF   0   0   0
  11    11 D0026 10111000      0      0     0      0      0 0 FF   0   0   0
  12    12       00101000      0      0     0      0      0 0 FF   0   0   0
  13    13       00101000      0      0     0      0      0 0 FF   0   0   0
  14    14 B0024 10111000      0      0     0      0      0 0 FF   0   0   0
  15   116       00101000    -26      0     0      0  -1402 0 FF   0   0   0
  16   117       00101000    -52      0     0      0  -1380 0 FF   0   0   0
  17    17       00000000      0      0     0      0      0 0 FF   0   0   0
  18   132       00001000      0      0     0      0      0 0 FF   0   0   0
   I ADDRS LABEL LEPOVDSR X DATM  X LST Z DTM Z LAST TOLSTP R  I SNS ASC ASQ

Figure 26. Typical Library Cartridge Inventory Page 

Heading    Meaning
   I    Decimal internal element address
   ADDRS    Decimal SCSI element address.
   LABEL    Right justified cartridge bar code label, with the checksum character stripped.
   LEPOVDSR    Bit-mapped element state field interpreted as:
   
   L    Label valid
   E    Label Error
   P    Magazine Present
   O    Element Occupied
   V    Element Occupied Flag valid
   D    Not Used
   S    Not Used
   R    Not used
   
   X DATM    X target offset in counts for this element.
   X LST    Last X offset target in counts for this element.
   Z DATM    Z target offset in counts for this element.
   Z LST    Last Z offset target in counts for this element.
   TOLSTP    Z count at the back of the drive for this element.
   R    SCSI ID of a host reserving this element (0 - 7).
   I    Reservation ID:
      0 - OxFE for reserved
      0xFF for not reserved
   
   SNS    Last sense code reported to host.
   ASC    Last ASC code reported to host.
   ASCQ    Last ASCO code reported to host.


Figure 27 shows a typical statistics page.

    I -CRTY RTRTY PTRTY CTRTY LTRTY   PUTS BCRTRY
    0     0     2     0     0     0    242      0
    1     0     0     0     0     0    264      0
    2     1     1     2     0     0    215      0
    3     0     0     0     0     0    258      0
    4     0     0     0     0     0    221      0
    5     0     0     3     0     0    237      0
    6     0     0     0     0     0    238      0
    7     0     0     2     0     0    238      0
    8     0     0     0     0     0    243      0
    9     1     0     1     0     0    246      0
   10     0     0     0     0     0    248      0
   11     0     0     0     0     0    226      0
   12     0     0     0     0     0    212      0
   13     0     0     0     0     0    243      0
   14     0     0     0     0     0    232      0
   15     1     0     3     0     1    548      0
   16     1     3     3     0     0    337      0
   17     0     0     0     0     0      0      0
   18     0     0     0     2     0   4452      0
    I -CRTY RTRTY PTRTY CTRTY LTRTY   PUTS BCRTRY
   Magazine Offset  = 74
   Fixed Cell Offset = 50
   Drive A Offset  = 58
   Drive B Offset  92
   Status = 228/33/22603/5.19/12.85/26.20/76F/75F/76F
   ETime =     1:16:53:16

Figure 27. Typical Library Cartddge Statistics Page 

Heading    Meaning
   I    Internal element address.
   CRTY    Number of retries starting cartridge on a pick from this element.
   RTRTY    Number of retries after starting cartridge on a pick from this element.
   PTRTY    Total number of put retries to this element.
   CTRTY    Total number of center retries to this element.
   LTRTY    Total number of latch retries to this element (drives only).
   PUTS    Total number of puts to this element.
   BCRTRY    Total number of bar code retries for this elemement.
   Magazine Offset    Offset from nominal for the magazine.
   Fixed Cell Offset    Offset from nominal for the fixed cells.
   Drive A Offset    Offset from nominal for Drive A.
   Drive B Offset    Offset from nominal for Drive B.
   Status    Example status line:228/33/22603/5.19/12.85/26.20/76F/75F/76F Total power
     on hours/Total hard pick and put errors/Total puts/ voltage of +5v
     supplyNoltage of +12v supply/ Voltage of +24v supply/Drive A
     temperature/Drive B temperature/Controller temperature
   Etime    Total on time in the form of Days: Hours: Minutes: Seconds.


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