Managing connections, Chapter 9 managing connections -1 – HP Storage Mirroring Software User Manual

Page 51

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9

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 daemon is restarted. For example, if the Storage

Mirroring daemon 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.

This chapter covers several connection related activities.

Monitoring connections

on page 9-2

Monitoring the message window

on page 9-6

Queuing Storage Mirroring data

on page 9-8

Configuring automatic reconnections

on page 9-12

Disconnecting a connection

on page 9-13

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 daemon.

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