Reconfiguration Run Output - Control Data Corporation CYBER 170 Series Operator's Manual

If the device specified is a shared device in a
mul timainframe environment and reconfiguration is not
desirable on the current machine, type .
K.IGNORE
and processing of the device on that machine is
terminated. The machine must wait for the other machines
to complete their processing of the device.
If
reconfiguration processing is desired' for that device at, a
.later time, enter either the RERUN or RESET command.
The OP (reconfiguration option) parameter allows a choice
of four actions: add a unit (A option), delete a unit (D
option), replace a unit (R option), and switch a unit (S
option). Equipment requirements for the OP parameter are
given in table 6-3.
The options to add and delete are intended primarily for
local machine use. When' the addition, or deletion is
completed on a machine, the bit which was set to indicate
a reconfiguration request is cleared for that equipment.
No other machines will recognize the request. Therefore,
if more than one· machine must add or delete units from the
same shared equipment, you must enter REDEFINE from
each machine. .
When the replace or 'switch option is used on a nonshared
device, the system verifies that the replacement unit is not
in use on the machine initiating the reconfiguration, but it
cannot check for use of the unit by other machines.
It
is
your responsibility to ensure that the replacement unit is
not in use by any other machine in a multimainframe
environment.
When the replace or switch option is used on a shared
device, the system verifies that the replacement unit is
available on all machines unless a machine does not have
the device loaded. In that case, reconfiguration proceeds
on the machines which have the device loaded. Other
machines will not be able to access the device.
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NOTE
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Aborting a swi tch procedure causes the
replacement unit to be undefined (not in
the EST).
Figure
6-2
shows the output from a sample reconfiguration
run.
TABLE 6-3. EQUIPMENT REQUIREMENTS FOR OP PARAMETER
Current Equipm ent Replacem ent Unit
Must Be Must Be Unit on
OP Must Be
Unloaded, Must Be Unloaded, Same Special
Option in EST Removable
in EST Removable Channelst Considera tions
A Yes. Yes. No. Yes. Yes.
Equipment must
(add) have less than
eight units.
D
'Yes.
Must be N/A. N/A. N/A.
Equipment must
(delete)
removable; have at least
if not un- one unit.
loaded, unit
must be in EST.
R Yes.
No. Not nec-
Yes, if in Yes.
-
(replace)
essary. EST.
S Yes. No. Yes. - Yes. Yes.
-
(switch)
tThe unit must be on the same channels as the equipment being reconfigured.
MASS STORAGE CONFIGURATION. 78/05/29. 06.11.43.
ORD TYPE ST
EO
UNITS
CH
1. DJ ON 0 01 25 26
2. DJ-2 ON
6
00 01
07
3. DJ OFF 6 02
07
4. DI
ON 0 02 25 26
5. DI-2
ON 0 04 03 25 26
6. DI ON 0 06
25 26
7. DI ON 0 05 25 26
11. DP ON 0 00 30
Figure 6-2. Reconfiguration Run Output
6-4
60435600 L
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