Processing time

Files saved by the 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, it is recommended that you run the Export Tool multiple times for different periods, rather than run 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 the Export Tool should save statistics about 128 ports within a 24-hour period.*
PortWWN	5 minutes	This estimate assumes that the Export Tool should save statistics about 128 ports within a 24-hour period.*
LDEV	60 minutes	This estimate assumes that: The Export Tool should save statistics about 8,192 volumes within a 24-hour period.* The Export Tool is used eight times. Each time the Export Tool is used, the tool obtains statistics within a 3-hour period.
LU	60 minutes	This estimate assumes that: The Export Tool should save statistics about 12,288 LUs within a 24-hour period.* The Export Tool is used eight times. Each time the 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.