Based on these best practices, you need at least five disk volumes for a LCR deployment with a single database! Use of separate disk volumes for the operating system and the Exchange binaries are even recommended. Otherwise, a failed disk volume means data loss, because you cannot use your last backup and the new transaction logs to recover your Exchange database to the point of failure. For recovery purposes, you should use separate disk volumes for your databases and log files. However, this a disadvantage: If you lose this volume, you lose the production and the replica database at the same time. You can use the same disk volume that is used by the production database and log files for the passive database and log files. It is not possible to host the passive database and log files on a network share. ![]() ![]() The volume used to store the passive database must be a local disk from the disk management perspective, but can be located on a central storage array utilizing iSCSI or Fibre Channel connectivity. Pierre Bijaoui, Juergen Hasslauer, in Designing Storage for Exchange 2007 SP1, 2008 Storage ConfigurationĬonsidering the replication process during the storage design is important.
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