ITEM: DC9912L

SYSTAPE/7331 & 3590 Functionality Descriptions



Question:

Model J30
              PROJECT: CTA

                 NODE: none

 PRODUCTION BOX (Y/N): n/a

DEVELOPMENT BOX (Y/N): n/a

       TEST BOX (Y/N): n/a

INSTALL PROBLEM (Y/N):n/a

DESCRIPTION:  cus has quest. regarding tape library (7331 &
3590)  

Response:

ENV:

Model J30

*CUSTOMER REP: Lisa Bradley

 PROBLEM:
Questions regarding the functionality of 7331 and 3590.

*ACTION TAKEN:

7331

- 2 drives, can write simultaneously in Split sequential mode
- Robotic arm to move tapes has 2 device names. Each name moves 10 of
  the 20 tapes in library.
- Can attach to 2 different servers and be shared for both.
- 7gb capacity 8mm tapes
- Data transfer rate of 500kps to 1mps
- Explained how to moves tapes using tapeutil command.
- Explain functionality of Base Random and Split Sequential Modes
-  Tar and cpio can not span tapes.
- Physically autoloads tapes
- Uses the Atape.driver

3590

- 1 drive
- 10 tape library
- 10 gb capacity cartridge
- Larger size requires a bit more storage space than 7331
- Data Transfer rate up to 9 mps.
- Drive will write faster than some hard disks can read, therefore
  you can have a dtr of less than 9 mg depending on the type of hard
  drive.  
- Larger physical unit than the 7331
- Physically autoloads tapes
- Tar and cpio WILL SPAN TAPES if the software device configuration is
  set sych that "Autoload = no".
- Uses the Atape.driver

*ACTION PLAN:

Faxing overview of drive mode settings for each. (Examples below)
Closing with customer approval.

 

3590
--------------------

There are three methods:
     MANUAL MODE
    ------------
      Put tape in either the import/export slot or top slot (1)
      Hit START button on the 3590 front panal

       To unload:
       Hit UNLOAD button on the 3590 front panal

    AUTOMATIC MODE:
    ---------------
      Put tape in first slot (1).  The tape can't be in the 
        import/export slot, because it will not load from there.
        It will always check the first slot with a tape 
        in it (1 - 10 slot)

      Hit START button on the 3590 front panal
  
      To unload and put next tape in the drive
       HIT UNLOAD button on the 3590 front panal

   RANDOM MODE:
    Put tape in a slot it does not matter which you use

   Break down of the slot numbers in the tape drive according
   to the  "tapeutil -f /dev/rmt\# inventory"  output

   31 -- Import/Export 
   16 -- Tape drive
   32 (top) - 41 (bottom) slot

To load a tape:
----------------
tapeutil -f /dev/rmt\# mount \
   
To unload a tape:
-----------------
tapeutil -f /dev/rmt\# umount \

Example of loading a tape from slot 37
tapeutil -f /dev/rmt0 mount 37

Example of unloading a tape from the tape drive back to slot 37
tapeutil -f /dev/rmt0 unmount 37

   
     7331 SPLIT RANDOM MODE SLOT ASSIGNMENTS

          |--------|    
          |   22   |  Bonus slot 22 used by /dev/smc0 or /dev/smc1
          |--------|  
          |   21   |  Bonus slot 21 used by /dev/smc0 or /dev/smc1
          |--------|
          
          |--------| ----
          |   20   |   
          |--------|  
          |   19   |
          |--------| 
          |   18   |
          |--------|
          |   17   |
          |--------|
          |   16   |  Slots 11-22 used by /dev/smc1
          |--------| 
          |   15   |
          |--------|  
          |   14   |  
          |--------|
          |   13   |  
          |--------|
          |   12   |
          |--------|   
          |   11   |
          |--------| ----
          |   10   |
          |--------|
          |    9   |
          |--------| 
          |    8   |
          |--------|  
          |    7   |  
          |--------|
          |    6   |  Slots 1-10 + 21 and 22 used by /dev/smc0
          |--------| 
          |    5   |
          |--------|
          |    4   |
          |--------|
          |    3   |
          |--------| 
          |    2   |
          |--------|
          |    1   |
          |--------| ----

          |--------|
          |   24   |  rmt1 (drive 2) used by /dev/smc1
          |--------|  
          |   23   |  rmt0 (drive 1) used by /dev/smc0
          |--------|
          
          Fig 1


HOW TO SET THE 7331-205 TO SPLIT RANDOM MODE
--------------------------------------------

On the front panel on the 7331 tape drive
  From the main menu
     Modes ----> Random
     Config ---> Split

On the AIX command line
  cfgmgr
  lsdev -Cc tape

   Example output from the lsdev command
   --------------------------------------
   rmt0 Available 00-01-01-00 7.0 GB 8mm Tape Drive
   rmt1 Available 00-01-01-20 7.0 GB 8mm Tape Drive
   smc0 Available 00-01-01-30 IBM 7331 Tape Medium Changer
   smc1 Available 00-01-01-40 IBM 7331 Tape Medium Changer

You should have two 7.0 GB 8mm tape drives (rmt\#) and two 7331 Tape 
Medium Changer devices (smc\#)

LIMITATIONS FOR SPLIT RANDOM MODE
----------------------------------
A tape cannot be moved from slot to slot (Slots 1-22).  
A tape can only be moved from tape drive to slot or slot to tape drive. 
See fig 1

/dev/smc0 cannot be used to move tapes into these slots: 11-20 and 
tape drive 2 (slot 24).  See fig 1

/dev/smc1 cannot be used to move tapes into these slots: 1-10 and 
tape drive 1 (slot 23).  See fig 1.

EXAMPLES
--------

Move a tape in slot 5 to rmt0 (slot 23)
---------------------------------------
  tapeutil -f /dev/smc0 move -s 5 -d 23

Move a tape in slot 11 to rmt1 (slot 24)
----------------------------------------
  tapeutil -f /dev/smc1 move -s 11 -d 24

Move a tape in rmt1 (slot 24) to slot 12
----------------------------------------
  tapeutil -f /dev/rmt1 unload
  tapeutil -f /dev/smc1 move -s 24 -d 12

Move a tape in rmt0 (slot 23) to slot 9
----------------------------------------
  tapeutil -f /dev/rmt0 unload
  tapeutil -f /dev/smc0 move -s 23 -d 9

ERROR MESSAGES:
---------------

1.  Trying to move a tape into a invaild slot
2.  A slot with a tape already in it
3.  Using the wrong /dev/smc\# device to move into a slot which it does not
    have access to.  See Fig 1
  
tapeutil -f /dev/smc0 move -s 23 -d 24
Moving medium, source 23 destination 24...
Operation failed with errno 22: Invalid argument

Error Sense Data,  Length 32

            0 1  2 3  4 5  6 7  8 9  A B  C D  E F   0123456789ABCDEF
    0000 - 7000 0500 0000 0018 0000 0000 2483 0000  [p...........$\^..]
    0010 - 0000 0030 0A09 0100 0201 0000 0000 0000  [...0............]


Using incorrect syntax with the tapeutil command
 tapeutil -f /dev/rmt   smc0 move -e 10 -s 23 
Missing argument for move subcommand
Operation failed with errno 0: Error 0




     7331 BASE RANDOM MODE SLOT ASSIGNMENTS

          |--------|    
          |   22   |  Bonus slot 22 used by /dev/smc0
          |--------|  
          |   21   |  Bonus slot 21 used by /dev/smc0
          |--------|
          
          |--------| ----
          |   20   |   
          |--------|  
          |   19   |
          |--------| 
          |   18   |
          |--------|
          |   17   |
          |--------|
          |   16   | 
          |--------| 
          |   15   |
          |--------|  
          |   14   |  
          |--------|
          |   13   |  
          |--------|
          |   12   |
          |--------|   
          |   11   |
          |--------| 
          |   10   |  Slots 1-22 used by /dev/smc0
          |--------|
          |    9   |
          |--------| 
          |    8   |
          |--------|  
          |    7   |  
          |--------|
          |    6   | 
          |--------| 
          |    5   |
          |--------|
          |    4   |
          |--------|
          |    3   |
          |--------| 
          |    2   |
          |--------|
          |    1   |
          |--------| ----

          |--------|
          |   24   |  rmt1 (drive 2) used by /dev/smc0
          |--------|  
          |   23   |  rmt0 (drive 1) used by /dev/smc0
          |--------|
          
          Fig 2

HOW TO SET THE 7331-205 TO BASE RANDOM MODE
-------------------------------------------

On the front panel on the 7331 tape drive
  From the main menu
     Modes ----> Random
     Config ---> Base

LIMITATIONS FOR BASE RANDOM MODE
---------------------------------
A tape cannot be moved from slot to slot (Slots 1-22). 
A tape  can only be moved from tape drive to slot or slot to tape drive.
See fig 1

/dev/smc1 cannot be used until the 7331-205 is set back to SPLIT RANDOM
MODE.   

EXAMPLES
--------

Move a tape in slot 5 to rmt0 (slot 23)
---------------------------------------
  tapeutil -f /dev/smc0 move -s 5 -d 23

Move a tape in slot 11 to rmt1 (slot 24)
----------------------------------------
  tapeutil -f /dev/smc0 move -s 11 -d 24

Move a tape in rmt1 (slot 24) to slot 12
----------------------------------------
  tapeutil -f /dev/rmt1 unload
  tapeutil -f /dev/smc0 move -s 24 -d 12

Move a tape in rmt0 (slot 23) to slot 9
----------------------------------------
  tapeutil -f /dev/rmt0 unload
  tapeutil -f /dev/smc0 move -s 23 -d 9

ERROR MESSAGES:
---------------
  
Trying to use /dev/smc1 when the 7331-205 is set in BASE RANDOM MODE

tapeutil -f /dev/smc1 move -s 6 -d 23
Open failed: I/O error


     7331 SPLIT SEQUENTIAL MODE SLOT ASSIGNMENTS

          |--------|    
          |   22   |  Only used for cleaning  
          |--------|  
          |   21   |  Only used for cleaning 
          |--------|
          
          |--------| ----
          |   20   |   
          |--------|  
          |   19   |
          |--------| 
          |   18   |
          |--------|
          |   17   |
          |--------|
          |   16   |  Slots 11-20 used by /dev/rmt1 (top tape drive slot 24)
          |--------| 
          |   15   |
          |--------|  
          |   14   |  
          |--------|
          |   13   |  
          |--------|
          |   12   |
          |--------|   
          |   11   |
          |--------| ----
          |   10   |
          |--------|
          |    9   |
          |--------| 
          |    8   |
          |--------|  
          |    7   |  
          |--------|
          |    6   |  Slots 1-10 used by /dev/rmt0 (bottom tape drive slot 23)
          |--------| 
          |    5   |
          |--------|
          |    4   |
          |--------|
          |    3   |
          |--------| 
          |    2   |
          |--------|
          |    1   |
          |--------| ----

          |--------|
          |   24   |  rmt1 (drive 2   Top tape drive)
          |--------|  
          |   23   |  rmt0 (drive 1   Bottom tape drive) 
          |--------|
          
          Fig 1


HOW TO SET THE 7331-205 TO SPLIT SEQUENTIAL MODE
------------------------------------------------

Make sure there are no tapes in the tape drives (slot 23 and slot 24)
before you can switch to Sequential mode

On the front panel on the 7331 tape drive
  From the main menu
     Modes ----> Seq
     Config ---> Split


 
LIMITATIONS FOR SPLIT SEQUENTIAL MODE
--------------------------------------

/dev/rmt0 (slot 23) will only autoload tapes 1-10, once those slots have
been used it will wait until the return key is entered on the 7331 front
panel before starting with tape 1 again. 

/dev/rmt1 (slot 24) will only autoload tapes 11-20, once those slots have
been used it will wait until the return key is entered on the 7331 front
panel before starting with tape 11 again..

EXAMPLES
--------
Doing a backup once that is complete unloading the tape which will put the
next tape in the drive.

tar -cvf /dev/rmt0 /home
tctl -f /dev/rmt0 offline

tar -cvf /dev/rmt1 /usr
tctl -f /dev/rmt1 offline



Support Line: SYSTAPE/7331 & 3590 Functionality Descriptions ITEM: DC9912L
Dated: June 1997 Category: N/A
This HTML file was generated 99/06/24~13:30:16
Comments or suggestions? Contact us