The following indicates the required memory necessary to run Business Continuity Manager.
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For a user region of 16 MB or less: 1,024 KB
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For an extended user region of 16 MB or more:
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For TSO/E:
4,000 KB + ↑ (1 × number-of-volumes) ↑ KB
+ ↑ (3.5 × number-of-copy-pairs) ↑ KB
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For batches:
4,000 KB + ↑ (1 × number-of-volumes) ↑ KB
+ ↑ (2.5 × number-of-copy-pairs) ↑ KB
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For executing the YKIMPORT command:
4,000 KB + ↑ (1 × number-of-volumes) ↑ KB
+ ↑ (2.5 × number-of-copy-pairs-to-be-created) ↑ KB
+ ↑ (3 × number-of-BASEGROUP-copy-pairs) ↑ KB
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For executing YKBTSCAN:
4,000 KB + ↑ (1.5 × number-of-volumes-to-be-scanned) ↑ KB
+ ↑ (2 × number-of-scanned-volumes) ↑ KB
number-of-volumes: Total number of volumes in the device address domain to be used. If multiple copy groups are used, the sum of the volumes in each copy group.
number-of-copy-pairs: Number of copy pairs in the copy group definition file to be used.
number-of-copy-pairs-to-be-created: Number of copy pairs to be created by using the YKIMPORT command.
number-of-BASEGROUP-copy-pairs: Number of copy pairs in the copy group definition file to be based on.
number-of-volumes-to-be-scanned: Total number of volumes included in the range to be scanned by YKBTSCAN.
number-of-scanned-volumes: Total number of volumes in the disk configuration definition file if YKBTSCAN is executed to add volumes to an existing disk configuration definition file.
↑A×B↑: Indicates that the result of A×B is rounded up to the nearest integer.
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The memory required when linking with Replication Manager is shown below. The PREFIX parameter and DEVN parameter in the formula below are the initialization parameters of the Business Continuity Manager agent:
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For a user region of 16 MB less than: 2,048 KB
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For an extended user region of 16 MB or more:
6,000 KB + A KB
+ ↑ (512 × number-of-specified-PREFIX-parameters) ÷ 1,024 ↑ KB
+ ↑ (64 × number-of-specified-DEVN-parameters) ÷ 1,024 ↑ KB
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A: The larger of (1.5 × D) and (3 × P)
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D: Among the numbers of devices specified for the DEVN parameters, the highest number of devices.
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P: Among the copy groups used by the Business Continuity Manager agent, the highest number of copy pairs in any group.
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Where "↑A÷B↑" indicates rounding up the decimal numbers from the result of A÷B.
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The amount of memory required to use BCM Monitor is shown below.
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For a user region of 16 MB less than: 2,048 KB
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For an extended user region of 16 MB or more:
6,000 KB + (3 × number-of-copy-pairs) KB
+ (C + S) × 1KB
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C: Number of copy group parameters specified in the YKMONCG file
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S: Number of action parameters specified in the YKMONCG file
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