RE: [ActiveDir] [OT] RAID 5 Best Practice

Tue, 23 May 2006 01:17:36 -0700

Title: RE: [ActiveDir] [OT] RAID 5 Best Practice
Joe,
 
 Well all agree on that, however we are pretty much stuck with the apps in question "as-is" as the software is supplied "from above" (e.g. the stuff from www.ncer.org). These days I copy the database onto a users PC and they run the reports and analysis locally, as that's what the software supplier tells them to do, and the users are happy with that.
 
Dave.

From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of joe
Sent: 23 May 2006 04:38
To: [email protected]
Subject: RE: [ActiveDir] [OT] RAID 5 Best Practice

Access is crap to use for a multiuser app. Don't discount the fact that the perf could be simply related to that.
 
--
O'Reilly Active Directory Third Edition - http://www.joeware.net/win/ad3e.htm 
 
 

From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Dave Wade
Sent: Thursday, May 18, 2006 7:08 PM
To: [email protected]
Subject: RE: [ActiveDir] [OT] RAID 5 Best Practice

Its the one thing that seems to give us performance issues. Last time I investigated things running slow, client was quiet (low CPU short disk queue, minimal paging) , network was quiet yet response was slow. Conclusion was that server was some how bottle neck. I must admit I didn't do much work on investigation. I think they should use appropriate tool such as msde (only a few users) but program is provided by central government, so we are stuck with it. I wonder if it was just running same time as backups perhaps...
-----Original Message-----
From: [EMAIL PROTECTED] on behalf of Brian Desmond
Sent: Thu 18/05/2006 23:34
To: [email protected]
Cc:
Subject: RE: [ActiveDir] [OT] RAID 5 Best Practice

Access database will likely get cached on the client in memory, in any case it’d be all read ops. Access doesn’t cache report output.

 

Thanks,
Brian Desmond

[EMAIL PROTECTED]

 

c - 312.731.3132

 

 

From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Dave Wade
Sent: Thursday, May 18, 2006 6:22 PM
To: [email protected]
Subject: RE: [ActiveDir] [OT] RAID 5 Best Practice

 


For file sharing, I would consider 0Ư but 5 would be more likely since you
probably want/need the space more than the speed. File sharing doesn't
really beat the disks up relative to a busy DC even in large multi-thousand
user file servers I have seen.

 

What about when some idiot user sets up an Access database on one and runs "inappropriate" reports against it.. 

 

 

 

It is why most normal server admins really
have no clue what to look for in terms of IO load on servers but any
Exchange Admin worth anything is looking at that right away in a problem
situation and able to quote IOPS stats off the top of their head and know
what they can get from the underlying disk subsystem. Exchange disk configs
are critical.

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