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...........$\^Ã..]
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
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