Example 1 - Control Data Corporation CYBER 170 Series Operator's Manual

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EXAMPLE 1
Assume the following hardware configuration of 844 drives
is being used. Unit 5 is currently not defined.
EST Ordinal Unit
1 0
2 1
.3
2
4 3
5
4
Channel(s)
1,2
1,2
1,2
1,2
1,2
Status
Removable
Removable
Unit 2 defined by FBT ordinal 3 begins to fail. If the
devices defined by FBT ordinals 4 (unit 3) and 5 (unit 4) are
unloaded, the reconfiguration possibilities are to switch
units 2 and 3, or units 2 and 4. If units 3 and 4 are
currently in use, unit 5 can -be ·used to replace unit 2. The
commands required to reconfigure using unit 5 are as
follows:
REDEFINE,3.
Reconfiguration is requested for EST ordinal 3
(unit 2).
K,n.
Assigns K display to control point n.
K.RU=5
Replacement unit to be added is unit 5.
K.GO
Initiates proc.essing.
The operator is then instructed via the B display to
deactivate unit 2, move the pack on unit 2 to unit 5, and
activate unit 5. When unit 5 is ready and the packname is
verified, the system is allowed to use EST ordinal 3 (which
now defines unit 5) again.
EXAMPLE 2
Assume the following hardware configuration of 844 drives
is being used. -
FBT Ordinal Unit
Channel(s)
1 0 1
2
1
1
3 2 1
4 3
1
5 4 1,2t
6 0 2
7 1 2
10 2 2
Status
Removable
Removable
Removable
Unit 2 on channel 2 (defined by EST ordinal 10) begins to
fail. Two configuration possibilities exist.
• If the device defined by EST ordinal 7 (unit 1 on
channel 2) is unloaded, it may be switched with
the failing unit. The commands required to
reconfigure using EST ordinal 7 are as follows:
REDEFINE, 1 O.
K,n.
Reconfiguration is requested for EST
ordinal 10.
Assigns K display to control point n.
K.RU=1,OP=S,ES=7.
Specifies a switch from EST ordinal 10
(as given by the REDEFINE command) to
EST ordinal 7 (as given by the ES
parameter) of the replacement unit 1.
K.GO
Initiates processing.
• If EST ordinal 7 is in use, check the device defined
by EST ordinal 5 (unit 4 on channel 1). If EST
ordinal 5 is available for reconfiguration, special
procedures are necessary because its channel
assignment differs from ordinal 10. Before the
device can be switched as in the previous case,
the assignment to EST ordinal 5 must be deleted,
making FBT ordinal 5 a null equipment, and then
added with channel 2 assigned. The commands
required to reconfigure using EST ordinal 5 are as
follows:
UNLOAD,5.
If EST ordinal 5 is currently in use, it
must
be
unloaded.
REDEFINE,5.
K,n.
Reconfiguration is requested for EST
ordinal 5.
Assigns K display to control point n.
K.CU=4,OP=D
Deletes uni t 4 from EST ordinal 5.
K.GO
Initiates processing.
REDEFINE,5.
Reconfiguration is requested for EST
ordinal 5.
t
This device can be accessed from channels 1 or 2, and is currently assigned to channell.
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