Exchange 2010 – Upgrade SP1 to SP3

By | 22 July, 2014

Some important key for SP upgrade is :

1) SP cannot be uninstall
2) Schema will cange/extend

Below is the sequence of upgrade based on role :

1) Client Access servers (beginning with the internet-facing site)
2) Hub Transport and Edge Transport servers
3) Mailbox servers
4) Unified Messaging servers

Doing upgrade by sequence and proper step can reduce the downtime:

CAS array

1) Drainstop
2) Stop conflicting services
3) Disable monitoring

DAG Member

1) Failover
2) Stop conflicting services
3) Disable monitoring

Reference :
1- Full instruction for upgrade Exchange to SP3
2- CAS Array update instruction
3- DAG Member update instruction

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