One question we often get asked when talking to customers contemplating an Exchange upgrade or a switch from a competitor’s mail system is, "how many users per server can Exchange handle?" Nowadays, ...
Updated Jul 01, 2019
Version 2.0
Blog Post
Hi there, love the Blog
Here we have approx 20,000 users most of our servers are 2x PIII @ 1GHZ with 4GB or RAM (HP DL380 G1 - will be upgradeing to IBM blades soon) connected to a EMC Clarrion CX600. The total size of all of our DB's is about 3.5TB Each server has about 760GB or data/server and is has 4 storage groups with 5 mailbox stores per db.Each SG is on its own RAID 5 lun with it own TL (Raid 1) volume. Each server has about 2-3000 IO/S of storage connected to it.
Company wide we have about 14 Exchange servers:
5x SAN connected mailbox servers
2x Bridgehead+ PF servers
2x Front-end servers
4x Remote Exchange servers running local Public stores & connectors to our main hub site
Bottlenecks on our end:
Our processors are working a little to hard & we'll be moving to 3GHz Xeon processor IBM blades soon. During business hours each of our servers averages 200-600 IO/S with temp spikes of 1000+
I'd say our biggest Bottlenect is 32-Bit windows. We've been fighting Paged Pool Exhaustion issues on EX2K & EX2K3. If Exchange supported 64-Bit addressing we could load up our servers with oodles of Ram for a Large DB cache which would hopefully provide better performance.
Largest Mailbox ~12GB
Our corporate office has ~500 users but consumes about 25% of our storage.
Avage mailbox size (company wide) 250MB
Oh well, that my 2 bits... looking forward to see what everyone else is running.
Regards,
M@
Here we have approx 20,000 users most of our servers are 2x PIII @ 1GHZ with 4GB or RAM (HP DL380 G1 - will be upgradeing to IBM blades soon) connected to a EMC Clarrion CX600. The total size of all of our DB's is about 3.5TB Each server has about 760GB or data/server and is has 4 storage groups with 5 mailbox stores per db.Each SG is on its own RAID 5 lun with it own TL (Raid 1) volume. Each server has about 2-3000 IO/S of storage connected to it.
Company wide we have about 14 Exchange servers:
5x SAN connected mailbox servers
2x Bridgehead+ PF servers
2x Front-end servers
4x Remote Exchange servers running local Public stores & connectors to our main hub site
Bottlenecks on our end:
Our processors are working a little to hard & we'll be moving to 3GHz Xeon processor IBM blades soon. During business hours each of our servers averages 200-600 IO/S with temp spikes of 1000+
I'd say our biggest Bottlenect is 32-Bit windows. We've been fighting Paged Pool Exhaustion issues on EX2K & EX2K3. If Exchange supported 64-Bit addressing we could load up our servers with oodles of Ram for a Large DB cache which would hopefully provide better performance.
Largest Mailbox ~12GB
Our corporate office has ~500 users but consumes about 25% of our storage.
Avage mailbox size (company wide) 250MB
Oh well, that my 2 bits... looking forward to see what everyone else is running.
Regards,
M@