HP StorageWorks Storage Mirroring user's guide (T2558-96073, February 2008)

14 - 1
14 X Managing Connections
Managing Connections
A unique connection ID is associated with each Storage Mirroring connection. The connection ID provides a reference point
for each connection. The connection ID is determined by sequential numbers starting at one (1). Each time a connection is
established, the ID counter is incremented. It is reset back to one each time the Storage Mirroring service is restarted. For
example, if the Storage Mirroring service was started and the same replication set was connected to five target machines, each
connection would have a unique connection ID from 1 to 5.
The connection can be in various states as described in the following table.
After you have established a connection, you will want to monitor the connection and perhaps configure advanced settings.
This chapter covers many connection related activities.
 Monitoring connections on page 14-2
 Monitoring the message window on page 14-6
 Controlling mirroring on page 14-7
 Controlling an automatic mirror on page 14-9
 Configuring customized mirroring scripts on page 14-10
 Starting replication on page 14-10
 Configuring compression on page 14-11
 Configuring and removing orphan files on page 14-12
 Verifying your data on page 14-13
 Working with Storage Mirroring snapshots on page 14-17
 Queuing Storage Mirroring data on page 14-22
 Configuring automatic reconnections on page 14-25
 Blocking target paths on page 14-26
 Disconnecting a connection on page 14-26
Connection
Status
Description
Started The network connection exists and is available for data transmission. Replication and mirror data are
transmitted to the target as soon as possible. This is the standard state that you will see most often.
Stopped Storage Mirroring has linked the source and target, but the network connection does not exist.
Replication and mirror data are not transmitted to the target but are held in queue on the source.
Paused The network connection exists and is available for data transmission, but the replication and mirror
data is being held in a queue and is not being transmitted to the target.
Scheduled Storage Mirroring has linked the source and target, but the network connection is not established
until event driven or scheduling criteria have been met.
Error A transmission error has occurred. Possible errors include a broken physical line or a failed target
service.