HP StorageWorks Storage Mirroring scripting guide (T2558-96074, February 2008)

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Setting bandwidth limitations
You can set a fixed bandwidth limit or a bandwidth schedule.
1. With a fixed bandwidth limit, data will be transmitted at all times according to the user-specified bandwidth
configuration. If you want to set a fixed bandwidth limit, use the
limit bandwidth command.
2. With a scheduled bandwidth limit, data will be transmitted according to the user-specified schedule and the
user-specified bandwidth configuration. Implementing a schedule requires several steps and Storage Mirroring DTCL
commands. Create a scheduled event using the
limit bandwidth schedule add command.
Command LIMIT BANDWIDTH
Description Sets a fixed bandwidth limitation for transmitting data from the source to the target
Syntax
LIMIT BANDWIDTH <bytes>, <seconds> TO <target>
Options
 bytes—Number of bytes to be transmitted
 seconds—Maximum number of seconds to wait before transmitting again
 target—Name of the target, an IP address on the target, or a virtual IP address. Depending on the
network route Storage Mirroring uses to access the target, you may need to specify the fully
qualified domain name.
Examples
limit bandwidth 19300 5 to beta
Notes  This command transmits in bursts, not bytes per seconds. The time identifies how long to wait
before transmitting again. For example, if 5 seconds are specified and it only takes 2 seconds to
send the specified bytes, Storage Mirroring will wait an additional 3 seconds before transmitting
again.
 Target names that contain non-alphanumeric characters must be enclosed in quotation marks.
Command LIMIT BANDWIDTH SCHEDULE ADD
Description Creates a scheduled bandwidth event for limiting transmission of data from the source to the target
Syntax
LIMIT BANDWIDTH SCHEDULE ADD <label> DAYS=<day1>[, day2,..., dayN]
STARTTIME=<hh:mm> LIMIT=<bytes>, <seconds> | UNLIMITED
TO <target>
Options  label—Unique name that identifies this bandwidth scheduling event
 Day1, Day2,..., DayN—Day(s) of the week that you want to schedule the bandwidth limitation for.
You can either spell out the entire day or use just the first two letters of the day.
 hh:mm—Time, using a 24-hour clock, to indicate when this event will start
 bytes—Number of bytes to be transmitted
 seconds—Number of seconds to wait before transmitting again
 UNLIMITED—Bandwidth is not limited during this scheduled event
 target—Name of the target, an IP address on the target, or a virtual IP address. Depending on the
network route Storage Mirroring uses to access the target, you may need to specify the fully
qualified domain name.
Examples
 limit bandwidth schedule add weekday days=Mo, Tu, We, Th, Fr
starttime=06:00 limit=19300 5 to beta
 limit bandwidth schedule add weekend days=Sa, Su starttime=04:00
limit=unlimited to beta