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Microsoft Exchange and the SAN

Posted on 2010-11-13
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Hi,

1) I am still confused related to the RELATIONSHIP between the Microsoft Exchange and the SAN (Storage Area Network) in the Production environment.

2) When i installed the Microsoft Exchange; the default locations are as the followings:
-for Exchange server's database: C:\Program Files\ExchSrvr
-When Creating the Storage Group:
  * For Transaction Log Location: C:\Program Files\ExchSrvr\Storage Group 1
  * For System Path Location: C:\Program Files\ExchSrvr\Storage Group 1
  * Log File Prefix: E01
-When Creating the Mailbox (say it for a user called "mbrown")
  * For Exchange Database: C:\Program Files\ExchSrvr\Storage Group 1\mbrown.edb
  * For Exchange Streaming Database: C:\Program Files\ExchSrvr\Storage Group 1\mbrown.st

3) I believe that i can CHANGE the PATH of the Exchange Database (during the Installation); say it, from "the default one" (C:\Program Files\ExchSrvr) to a DRIVE at the SAN (Storage Area Network) which is called " M: drive "; so all the above PATHS will be changed to :
-for Exchange server's database: M:\Exchsrvr
-For Transaction Log Location: M:\ExchSrvr\Storage Group 1
-For System Path Location: M:\ExchSrvr\Storage Group 1
-Log File Prefix: E01
-For Exchange Database: M:\ExchSrvr\Storage Group 1\mbrown.edb
-For Exchange Streaming Database: M:\ExchSrvr\Storage Group 1\mbrown.st
-Etc

4) My questions: i) Is my understanding CORRECT or WRONG? (Could we install the Exchange Database at the SAN or SHOULD be on the EXCHANGE SERVER itself?), ii) If the answer of #1 is CORRECT; my understanding of the CHANGE of the PATHS are also CORRECT?

5) Thank you

tjie

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Question by:tjie
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rr1968 earned 500 total points
ID: 34128662
WHen you install Exchange server, you are installing the application binaries (dlls, exes, etc) This installation can be on the local drive (say C drive)
While creating the Storage group, you can specify the log,system files to be created on SAN
Once SG is created, then you select the Database (edb) location  to the SAN too
My recommendation would be to seperate the database and log location to avoid disk contention.
Say Database location is M drive and log files are on N drive (SAN)
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by:tjie
ID: 34128755
rr1968,

1) ****My recommendation would be to seperate the database and log location to avoid disk contention.
Say Database location is M drive and log files are on N drive (SAN)****

- Would you please SPECIFY clearly which ones (at my "sample" above) are the "DATABASE files" and the "LOG files" which i should put at M drive and N drive?

2) Thank you

tjie
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by:rr1968
ID: 34128913
These are logs:
-When Creating the Storage Group: This could be N drive)
  * For Transaction Log Location: N:\Program Files\ExchSrvr\Storage Group 1
  * For System Path Location: N:\Program Files\ExchSrvr\Storage Group 1
  * Log File Prefix: E01

This is database: (this could be on M drive)
-When Creating the Mailbox (say it for a user called "mbrown")
  * For Exchange Database: M:\Program Files\ExchSrvr\Storage Group 1\mbrown.edb
  * For Exchange Streaming Database: M:\Program Files\ExchSrvr\Storage Group 1\mbrown.st

BTW, you can build a drive big enough to hold your databases and log files will be 30% of database drive

Say if M drive is 100GB, have N drive at least 30GB (just in case if logs are not purged during backups)



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