Processing time

Files saved by Export Tool are often very large. The total file size for all files can be as large as approximately 2 GB. For this reason, the exporting process might take a lot of time. If you want to export statistics spanning a long period of time, run Export Tool multiple times for different periods, rather than running it one time to export the entire time span as a single large file. For example, if you want to export statistics spanning 24 hours, run the tool eight times to export statistics in three 3-hour increments.

The next table provides lists time estimates for exporting monitoring data files using different operands in the group subcommand:

Estimate of time required for exporting files

Operand for the group subcommand

Estimated time

Remarks

Port

5 minutes

This estimate assumes that Export Tool should save statistics about 128 ports within a 24-hour period.*

PortWWN

5 minutes

This estimate assumes that Export Tool should save statistics about 128 ports within a 24-hour period.*

LDEV

60 minutes

This estimate assumes that:

  • Export Tool should save statistics about 8,192 volumes within a 24-hour period.*

  • Export Tool is used eight times. Each time Export Tool is used, the tool obtains statistics within a 3-hour period.

LU

60 minutes

This estimate assumes that:

  • Export Tool should save statistics about 12,288 LUs within a 24-hour period.*

  • Export Tool is used eight times. Each time Export Tool is used, the tool obtains statistics within a 3-hour period.

* For a 1-minute interval, the number of hours for the data that is stored is proportional to the interval. For example, for a 2-minute interval, data for 48 hours can be stored.

Note:

  • The estimated time that includes the transfer time of the network might take a lot of time depending on the transmission speed of the network.

  • To shorten the acquisition time, specify the option of the group command to narrow acquisition objects. For details about the group command, see group.