Price is US$3,280 per server; annual support costs US$820 per server
Platforms:
Windows 2000 Server or Windows Server 2003; Exchange 2000 Server or Exchange Server 2003
Bottom Line:
SteelEye LifeKeeper offers a true fail-over cluster with additional options for remote asynchronous replication and one-to-many replication. Initial configuration can be complex, mostly due to all the options. One secondary server can support more than one primary Exchange server.
US$50 per year for every mailbox to be protected; volume discounts available; MailShadow server license does not carry a separate charge
Platforms:
Windows Server 2003 and Exchange Server 2003
Bottom Line:
MailShadow offers excellent protection of individual mailboxes, easy setup, and agentless operation. However, fail-over from primary to backup server is manual. The agentless system will appeal to some administrators, whereas others will wish for an automatic fail-over process.
