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Switch Command Interface (SWCI)
ServerNet Nomadic Disk (Release 2) User’s Guide—523968-001
6-22
SWITCH Command
SWITCH Command
The SWITCH command changes the switch position of the specified switch card. A
switch card can be in either the STRAIGHT position or the CROSSED position.
SC n
specifies the switch card by its slot number, which is an integer from 1 through 8.
The key switch on the SCC must be in the REMOTE position for this command to
succeed.
If the specified slot does not contain a switch card, SWCI returns an error
message.
STRAIGHT
Sets the switch in its straight position, as shown in Figure 6-1 on page 6-23.
CROSSED
Sets the switch in its crossed position, as shown in Figure 6-1 on page 6-23.
If neither STRAIGHT nor CROSSED is specified, the switch is toggled (switched from
its current position to the other position).
Considerations
•
The key switch on the SCC must be in the REMOTE position for this command to
succeed. If the key switch is in the LOCAL position, SWCI returns an error
message.
•
After a SWITCH command, SWCI verifies that the specified switch card has
changed position. If the command was successful, SWCI returns a message
stating so. If the command was unsuccessful, SWCI returns an error message.
•
A switch card malfunction might cause a switch to not respond to the SWITCH
command. After entering the SWITCH command, confirm that the specified switch
card is in the specified position by checking the response messages for the new
switch state.
Examples
•
To toggle the position of the switch card in slot 2 (currently in the straight position):
SWCI $NDSWA.#TERM>UNLOCK SC 2 SC 2 is unlocked
SWCI $NDSWA.#TERM>SWITCH SC 2 SC 2 is toggled from straight to crossed
SWCI $NDSWA.#TERM>LOCK SC 2 SC 2 is locked
Because neither straight nor crossed was specified, the switch moves to the
opposite of its current position (to the crossed position).
SWITCH SC n [ ,STRAIGHT | ,CROSSED ]
- ServerNet Nomadic 1
- Disk (Release 2) 1
- User’s Guide 1
- Document History 2
- ServerNet Nomadic Disk 3
- (Release 2) User’s Guide 3
- 4. Switch Modules 4
- 5. Switchovers 4
- Contents 5
- A. Part Numbers 6
- What’s New in This Manual 9
- Installing and Configuring 10
- About This Guide 11
- Where to Get More Information 12
- Your Comments Invited 12
- Notation Conventions 13
- General Syntax Notation 14
- Notation for Messages 15
- Abbreviations 17
- Remote Disk Drive Mirroring 20
- Switchover 21
- Supported Database Products 24
- Nomadic Disk Hardware and 25
- Software 25
- Nomadic Disk Software 26
- Nomadic Disk Hardware 27
- VST205.vsd 28
- VST206.vsd 29
- Hardware Item Function 31
- Troubleshooting 31
- Information 31
- VST203.vsd 32
- Nomadic Disk Manager 35
- Nomadic Disk Manager Files 36
- ADD DEFINE Statement 42
- ADD SEGMENT Statement 43
- PROCESS Statement 45
- SET PATH Statement 47
- SET VOL Statement 48
- 4 Switch Modules 51
- Switch Modules 52
- Switch Controller Card 53
- SCC Key Switch 54
- SCC Temperature Sensors 54
- SCC LEDs 55
- Switch Card 56
- Switch Card Toggle Switches 58
- Switch Card LEDs 59
- 5 Switchovers 61
- Preparing for a Switchover 62
- Switchover Examples 62
- Assumptions 63
- Opposite Position 64
- Planned Switchovers 64
- On Primary node \PRI 65
- Unplanned Switchovers 66
- From the Primary Node \PRI 67
- From the Backup Node \BCK 67
- Switchback 68
- On the Primary Node \PRI 69
- Switchovers 70
- Communications 73
- Switch Module Device Name 75
- Starting SWCI 76
- Stopping SWCI 77
- SWCI Commands 77
- Command 78
- Type Page Function 78
- ALARM Command 79
- Consideration 79
- LOCK Command 81
- LOG Command 82
- OBEY Command 83
- SELFTEST Command 84
- STATUS Commands 85
- Heading Field Contents 87
- SWITCH Command 92
- UNLOCK Command 94
- Considerations 94
- SWCI Messages 95
- Environmental Alert Messages 119
- Considerations 122
- Command Description Page 123
- ASSUME Command 125
- Examples 125
- DOWN Command 126
- EXIT Command 127
- GIVE Command 127
- HELP Command 129
- HISTORY Command 129
- LISTDEV Command 130
- LISTOPENS Command 130
- OUT Command 131
- RESET Command 132
- SEGMENTS Command 133
- SQL Command 133
- STATUS Command 133
- TAKE Command 135
- TMF Command 137
- UP Command 137
- VOLUMES Command 138
- A Part Numbers 139
- Part Numbers 140
- Remote Mirroring 141
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