HP 3PAR Remote Copy Software - Manual (Page 116)

4.10 Limiting Throughput
Remote Copy User’s Guide InForm OS Version 2.3.1
4.9 Limiting Throughput
For asynchronous periodic mode Remote Copy (see Asynchronous Periodic Mode on
page 2.24), it might be useful to use the throughput limiting option when setting up links over
leased lines. This option limits the maximum throughput that Remote Copy utilizes for a link.
This is useful, for example, if the leased line charges are based on the bit-rate utilized. If this
option is not used, Remote Copy tries to send data as fast as it can on both links. If the limit is
set, the data is metered and sent out at a rate less than or equal to the set limit. The rate can
be specified in units of gigabytes, megabytes, or kilobytes per second, as follows: .
◆ is the throughput limit, followed by g or G to indicate gigabytes per
second, m or M to indicate megabytes per second, or k or K to indicate kilobytes per
second (if not specified, the default is kilobytes per second).
◆ specifies the target name
If you wish to remove the throughput limit, issue the setrcopytarget command as described
above and specify the throughput value as 0, for example, setrcopytarget tput 0g
.
# setrcopytarget tput
NOTE: Limiting the throughput results in higher latency for the host writes to the
primary volumes, therefore it is not advisable to set to synchronous mode.