Configuring queuing, Configuring queuing -10 – HP Storage Mirroring V5 Software User Manual
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Configuring queuing
There are five queuing parameters available for configuration.
1.
Right-click a source machine and select
Properties
.
2.
Select the
Queue
tab.
3.
Specify the
Folder
which will store the queue. By default, this is /var/run/StorageWorks/StorageMirroring.
4.
Specify the
Maximum system memory for queue
. This is the amount of system memory, in MB, that, when exceeded,
will trigger queuing to disk. This value is dependent on the amount of physical memory available but has a minimum of 32
MB. By default, 128 MB of memory will be used.
5.
Specify the
Maximum disk space for queue
. This is the maximum amount of disk space, in MB, in the specified
Folder
that can be used for Storage Mirroring queuing or you can select
Unlimited
which will allow the queue usage to
automatically expand whenever the available disk space expands. When the disk space limit is reached, Storage Mirroring
will automatically begin the auto-disconnect process. By default, Storage Mirroring will use the maximum amount of disk
space available. Setting this value to zero (
0
) disables disk queuing.
6.
Specify the
Minimum Free Space
. This is the minimum amount of disk space in the specified
Folder
that must be
available at all times. By default, 50 MB of disk space will always remain free. The
Minimum Free Space
should be less
than the amount of physical disk space minus
Maximum disk space for queue
.
7.
Specify a percentage for
Alert when queue usage reaches
to identify the amount of the queue that must be in use to
trigger an alert message in the Linux system log. By default, the alert will be generated when the queue reaches 50%.
8.
Click
OK
to save the settings.
NOTE:
The
Maximum disk space for queue
and
Minimum Free Space
settings work in conjunction with each other.
For example, assume your queues are stored on a 10 GB disk with the
Maximum disk space for queue
set to
10 GB and the
Minimum Free Space
set to 500 MB. If another program uses 5 GB, Storage Mirroring will only
be able to use 4.5 GB so that 500 MB remains free.