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Exchange Server - Store Logs and databases

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My organization has ExchangeServer 2010 ( 2 mailbox, 2 hubtransport, 2 cas).
I need to increase the database mailbox space, but I have a doubt:
- Why Microsoft published that the best way to store the databases/logs in separated LUNS? Can I store everything (Logs/databases) in the same LUN?
For administration, store everything in the same LUN is more efficient, I believe.

I give my sincere apologies, I dont have fluency in english.
Thanks.

Monday, August 3, 2015 5:22 PM

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In a DAG, placing the logs and DBs on the same LUN is supported

https://technet.microsoft.com/en-us/library/ee832792(v=exchg.141).aspx

If these are standalone servers, you can do that, but its not a best practice for obvious reasons.

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- Proposed as answer by Lynn-LiModerator Tuesday, August 4, 2015 8:26 AM
- Marked as answer by Lynn-LiModerator Monday, August 17, 2015 1:34 AM
Monday, August 3, 2015 6:04 PM

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In a DAG, placing the logs and DBs on the same LUN is supported

https://technet.microsoft.com/en-us/library/ee832792(v=exchg.141).aspx

If these are standalone servers, you can do that, but its not a best practice for obvious reasons.

Twitter!: Please Note: My Posts are provided “AS IS” without warranty of any kind, either expressed or implied.
- Proposed as answer by Lynn-LiModerator Tuesday, August 4, 2015 8:26 AM
- Marked as answer by Lynn-LiModerator Monday, August 17, 2015 1:34 AM
Monday, August 3, 2015 6:04 PM
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Thanks Andy, another question:

Why is recommend to have each database in a separate disk? In our virtual environment, we can have the virtual disks all in one LUN - one for database, other for log ?"

Monday, August 3, 2015 8:15 PM
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Thanks Andy, another question:

Why is recommend to have each database in a separate disk? In our virtual environment, we can have the virtual disks all in one LUN - one for database, other for log ?"

Is this a database avail group or stand-alone? If a DAG, then no issues doing that. In a stand-alone, you risk data loss and downtime.
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Monday, August 3, 2015 8:28 PM
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Thanks a lot Andy!

Monday, August 3, 2015 9:13 PM