This answer suggests moving a large mailbox (50 gb) to a new Exchange database. Will that improve performance, such as moving mail from one folder to another and will it improve search speed?
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1You ought to start by trying to narrow down the source of the performance problem. Don't randomly make changes in the hopes that they'll fix your problem. What does `Get-MailboxDatabaseCopyStatus` say about the Content Index state? What are the results of `Test-ExchangeSearch`? Have you run a performance baseline check with the BPA? – joeqwerty Feb 10 '15 at 15:46
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@joeqwerty CopyQueue length = 0, ReplayLength = 0, SearchTime in Seconds = 2,355 – jao Feb 11 '15 at 08:10
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Is the search time 2,355 as in two thousand three hundred fifty five? – joeqwerty Feb 11 '15 at 11:27
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I think it is 2 seconds .355. – jao Feb 11 '15 at 11:28
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Moving a large mailbox to a different database will only increase performance if the destination database exists on either a different server, or different disk to the source database.
In virtualized environments connected to a SAN, sometimes moving the mailboxes to a database that resides on a different disk may not have a performance benefit because the data may exist on the same physical disk in the storage array.
To get around this, you might consider creating an exchange database on a disk that exists on a different SCSI bus, or a different LUN.
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Vasili Syrakis
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