Mount points and LCR

[billybunter]

I want to set up LCR currently I have C:/ set up with two disks raid one with th eexchange logs etc on D:/ 3 disks runniong raid 5 with th eex db etc on and I have just put in a new disk stand alone disk raid 0 that has been given
a drive letter of E:/ I want to point to the disk e:/ fir my LCR but have read its best to use mount points I understand why but having never used mount points before I want to make sure I am doing it correctly. How would I go about this? where would I create the mount point, when setting up LCR do I point all paths to the mount point etc etc etc any help would be great as I want to set it up the correct way.

Many thanks

 

[Zelandakh]

I wouldn't use mount points for LCR - where have you read that?

Logs work best of RAID1 not RAID5 as you are writing not reading.

 

[billybunter]

This is what I have found?

http://technet.microsoft.com/en-us/library/bb124704(EXCHG.80).aspx

 

[Zelandakh]

I stand corrected, it does say that. I just see the reasoning behind it but I don't see why it is beneficial.

So basically what they are saying is you choose there you want Exchange to THINK you've got the LCR folder, say d:\lcr. Then you get your new shiny disk, don't give it a drive letter and mount that as a volume mount point as directory LCR on existing drive D.

So checking the properties of drive D gives the size of D, properties of d:\lcr gives the size of the other disk.

Personally, I'd size the server correctly first - this is a way to just using fewer drive letters but if you need more than 26 drive letters on your Exchange server you've got such a large system you'd have a big SAN anyway.

 

[billybunter]

OK so I have a C:/ drive and E:/ drive I put my new disk in and tell it I want to make a mount point do I make my mount point on the C or D drive? E has the mailbox data base and C the logs does it matter where I put the mount point?

 

[Zelandakh]

Assuming D is in fact an optical drive you only get the option of C or E. Put it on either - I'd favour E since C is the OS.

Don't forget to exclude that folder from the backup unless you actively need / want to back up the LCR mount.