| Where allowed to run: All environments (*ALL) Threadsafe: No |
Parameters Examples Error messages |
The Start Auxiliary Storage Pool Session (STRASPSSN) command assigns a name to geographic mirroring, Metro Mirror, Global Mirror and FlashCopy sessions and starts IBM PowerHA for i sessions for them. A geographic mirroring session exists in i5/OS from the time the geographic mirroring mirror copy ASP is created. Metro Mirror, Global Mirror or FlashCopy sessions exists in TotalStorage from the time they are configured in the TotalStorage devices. The IBM PowerHA for i sessions allow IBM PowerHA for i to manage and monitor their activity. The IBM PowerHA for i sessions are named so that users and IBM PowerHA for i can identify to one another which session a management or monitoring activity pertains.
A session continues to exist until it is ended even if the session operation has completed. This is done because a session consists of an operation and the status of the operation. Keeping the session beyond the completion of the actual operation allows the session completion information to be retrieved.
Any ASP can be a FlashCopy source ASP. The following cannot be a FlashCopy target ASP:
Restrictions:
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| Keyword | Description | Choices | Notes |
|---|---|---|---|
| SSN | Session | Name | Required, Positional 1 |
| TYPE | Session type | *GEOMIR, *METROMIR, *GLOBALMIR, *FLASHCOPY | Required, Positional 2 |
| ASPCPY | ASP copy | Values (up to 223 repetitions): Element list | Required, Positional 3 |
| Element 1: Preferred source | Name | ||
| Element 2: Preferred target | Name | ||
| FLASHTYPE | FlashCopy type | *COPY, *NOCOPY | Optional |
| PERSISTENT | Persistent relationship | *YES, *NO | Optional |
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Specifies the name of the session to be started.
This is a required parameter.
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Specifies the type of session being started.
This is a required parameter.
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Specifies the names of the ASP copy descriptions for the ASP session. An ASP copy description is required for each copy of each ASP device, whether primary, secondary or UDFS ASP, that participates as a source or target in the session. ASP copy descriptions must be grouped by device in the parameter.
This is a required parameter. The first two values are required for all sessions. For a FlashCopy session, the values for each device must have the source copy specified first and the target second. For other sessions, a copy's Cluster Resource Group (CRG) overrides the order of specification and is used to identify the current source and target. The third and fourth values are needed by Global Mirror sessions to identify copies that are used to provide a consistent target.
You can specify 223 values for this parameter.
Element 1: Preferred source
Element 2: Preferred target
Element 3: Consistency source
Element 4: Consistency group range
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Specifies the FlashCopy session type.
Use of this keyword is only valid for a FlashCopy session.
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Specifies whether the relationship is to last beyond the brief interval that it takes to establish a FlashCopy copy. A persistent relationship is necessary in order to do an incremental FlashCopy or a reverse FlashCopy. These two operations are options on the Change Auxiliary Storage Pool Session (CHGASPSSN) command.
Use of this keyword is only valid for a FlashCopy session.
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Example 1: Starting a Geographic Mirroring Session
STRASPSSN SSN(ORDER) TYPE(*GEOMIR)
ASPCPY(ORDER ORDERBKP)
SSPTIMO(60) PRIORITY(*HIGH) TRACKSPACE(50)
This command starts a geographic mirroring session within the High Availability Solutions Manager. It sets the suspend timeout value to 60 seconds, specifies that the re-synchronization priority should be the highest posssible and specifies that up to 50 percent of the available tracking space can be used for recording changes.
Example 2: Starting a Metro Mirror Session
STRASPSSN SSN(ORDER) TYPE(*METROMIR)
ASPCPY(ORDER ORDERBKP)
This command starts a Metro Mirror session within the High Availability Solutions Manager. The source ASP copy description is named ORDER and the target ASP copy description is named ORDERBKP.
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*ESCAPE Messages
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