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SCOM 2007 and Logical File fragmentation alerts - Exchange 2007
SCOM 2007 and Logical File fragmentation alerts - Exchange 2007
- Hi all
SCOM 2007 upgraded to R2 last week, 3am on Saturday it ran the "Logical disk Fragmentation level" alert monitor and has reported that every one of my Database LUNs is fragmented over 90%.
6 Active\Passive SCC custers on Windows 2008, Exchange 2007 SP1. 28 Storage Groups per Server, 4 ISCSI luns allocated to each server for the Databases, 7 Databases on each.
The alerts are as follows:
""The disk I: (I:) on computer "EXMB05A.domain" has high fragmentation level. File Percent Fragmentation value is 92%. Defragmentation recommended: true.""
What I am after is a reasonable way of determining what exactly this means and what should be done? I want to understand how this level of fragmentation occurs (Any documentation references appreciated) and whether it is truly essential to defragment urgently. It seems to be that this high level of fragmentation is reached very easily on our systems. The LUNs in question do also hold the indexes for the databases.
Any ideas of how to approach this? Running file defrag very frequently is something I want to avoid (Online maintenance happens every night for 4 hours and takes only 2 days to perform a cycle for each Storage group - so internal DB fragmentation should not be an issue).
Tom
답변
- Well, I dont about those scom alerts. ( SCOM can be very talky sometimes!)
But, generally, file-level defrag isnt needed:
http://blogs.technet.com/exchange/archive/2004/10/25/247342.aspx
Do we need to file-level defragment Exchange database drives?
But if you do decide to do it, I would obviously move the databases before doing that.
That being said, you may want to ask this question as well in the SCOM forum:
http://social.technet.microsoft.com/Forums/en-US/category/systemcenteroperationsmanager- 답변으로 표시됨Frank.WangMSFT, 중재자2009년 11월 16일 월요일 오전 2:42
- 답변으로 제안됨Frank.WangMSFT, 중재자2009년 11월 10일 화요일 오전 10:00
모든 응답
- Well, I dont about those scom alerts. ( SCOM can be very talky sometimes!)
But, generally, file-level defrag isnt needed:
http://blogs.technet.com/exchange/archive/2004/10/25/247342.aspx
Do we need to file-level defragment Exchange database drives?
But if you do decide to do it, I would obviously move the databases before doing that.
That being said, you may want to ask this question as well in the SCOM forum:
http://social.technet.microsoft.com/Forums/en-US/category/systemcenteroperationsmanager- 답변으로 표시됨Frank.WangMSFT, 중재자2009년 11월 16일 월요일 오전 2:42
- 답변으로 제안됨Frank.WangMSFT, 중재자2009년 11월 10일 화요일 오전 10:00
- I asked this very question a moment ago in the SCOM forums.
I hope to get an answer, but believe that Exchange experts should have an answer as per your first link. I believe the Exchange guys should tell the monitoring guys what is the correct thing to monitor & alert on.
