Setting bandwidth limitations, Setting transmission start criteria – HP Storage Mirroring V5 Software User Manual
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Setting bandwidth limitations
Set the bandwidth by using the
limit bandwidth
command.
Setting transmission start criteria
Specify any combination of the following options to start transmitting Storage Mirroring data to the target machine.
Specifying a Start Time
—Specify a start time to begin transmitting Storage Mirroring data using the
schedule start
command with the
starttime
switch.
Specifying a Start Time and Repeat Interval
—Specify a start time to begin transmitting Storage Mirroring data and a
repeat interval for additional transmissions by using the
schedule start
command with the
starttime
and
every
switches.
Specifying Queue Usage
—Specify the queue usage criteria that must be in use to trigger Storage Mirroring data
transmission. By using the
memlimit
switch, you can specify the percentage of the disk queue and system memory that
must be in use to trigger transmission. By using the
queuesize
switch, you can specify the number of bytes that must
be in the queue to trigger transmission.
Command
LIMIT BANDWIDTH
Description
Sets bandwidth restrictions for transmitting data from the source to the target
Syntax
LIMIT BANDWIDTH <
bytes
>, <
seconds
> TO <
target_machine
>
Options
bytes
—Number of bytes to be transmitted
seconds
—Maximum number of seconds to transmit the specified bytes
target_machine
—Name of the target machine
Examples
limit bandwidth 19300, 1 to jersey
Notes
Machine names that contain non-alphanumeric characters must be enclosed in quotation marks.
Command
SCHEDULE START
Description
Sets criteria to start the transmission of data from the source to the target
Syntax
SCHEDULE <
target_machine
> START [STARTTIME = <
mm/dd/yy
> <
hh:mm
>] [MEMLIMIT =
<
percent
>]
[QUEUESIZE = <
bytes
>] [EVERY <
number
> <
time_units
>]
Options
target_machine
—Name of the target machine
mm/dd/yy
—Date in month/day/year format indicating when the transmission will begin
hh:mm
—Time in hour:minute format using the 24 hour clock indicating when the transmission
will begin
percent
—Any number between 0 and 100 indicating the percentage of the disk queue and system
memory that must be in use to initiate the transmission process
bytes
—Number of bytes that must be in the source queue and system memory to initiate the
transmission process
number
—Any number indicating how often the transmission process will be repeated
time_units
—Minutes (
min
), hours (
hr
), or days (
day
)
Examples
schedule jersey start starttime=3/11/07 03:30
schedule philly start queuesize=400000
schedule jersey start starttime=3/03/07 18:00, every 8 hr
schedule philly start memlimit=25, queuesize=150000000
Notes
The start option
EVERY
cannot be used by itself and cannot be the first option in a string of
options.
If you use more than one start option, the transmission will begin when the first start option
value is met. Additionally, each option after the first must be separated by a comma, as illustrated
in the Examples.
Machine names that contain non-alphanumeric characters must be enclosed in quotation marks.