Commands for managing SSI options
XBM provides SSI options that you can specify at startup (xbmxinit) or through a console command to override some hardware device settings.
These commands include:
- DISPLAY SETTINGS
- SET DATAMOVER
- SET ENQWAIT
- SET EXTALLOC
- SET vendorFCTOPPRCPRIMARY
- SET MAXTASKS
- SET MAXVOLS
- SET NOTIFYWHENCOMPLETE
- SET OUTDYNAM
- SET VOLS
SSI commands syntax
The basic syntax for these options is as follows.
The following figure displays the syntax for the commands.
Syntax for SSI override options
SSI commands descriptions
The following table describes the commands in more detail.
Commands for setting SSI override settings
SSI command | Description | Keywords |
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DISPLAY SETTINGS | Displays the SSI override settings that are enabled for the specified XBM subsystem identifier (SSID) The following example illustrates how this information is displayed: BMC73050I 18.04.18 XBMG DISPLAY SETTINGS BMC73087I 18.04.18 XBMG MAXTASKS is 3 BMC73087I 18.04.18 XBMG OUTDYNAM/VOLS is ON BMC73087I 18.04.18 XBMG EXTALLOC is OFF BMC73087I 18.04.18 XBMG ENQWAIT is OFF BMC73087I 18.04.18 XBMG DATAMOVER is NONE |
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SET DATAMOVER | Sets the DATAMOVER option for hardware devices |
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SET ENQWAIT | Sets the ENQWAIT option for hardware devices |
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SET EXTALLOC | Sets the EXTALLOC option for hardware devices |
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SET vendorFCTOPPRCPRIMARY | Specifies whether to generate the FCTOPPRCPRIMARY DFDSS keyword The command keyword differs based on the vendor of the storage device to which XBM is issuing the command:
Before using this command, review the vendor documentation to determine which settings your hardware supports. To use these commands, you must have the appropriate support in the DASD controller. |
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SET MAXTASKS | Sets the number of tasks to use for hardware devices during Instant Snapshot processing | Any integer from 1 through 9 This value specifies the number of tasks to use during Instant Snapshot processing. Increasing the value might improve performance for Instant Snapshot processing. |
SET MAXVOLS | Specifies the number of volumes that are available for snapshot processing | Any integer from 4 to 56 The default value is 16. If you specify a value of 3 or less, XBM sets the value to 4. If you specify a value of 57 or higher, XBM sets the value to 56. |
SET NOTIFYWHENCOMPLETE | Sets the NOTIFYWHENCOMPLETE option for EMC hardware devices This option specifies that EMC devices issue a message when the copy completes. |
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SET OUTDYNAM | Specifies whether to generate volume lists during hardware snapshots that use FlashCopy |
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SET VOLS | Specifies whether to generate volume lists during hardware snapshots |
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For more information about the hardware settings or option keywords, see your hardware vendor’s documentation.