Configuring/Sizing Exchange 2013 RAM

Posted on 2013-11-19
Medium Priority
Last Modified: 2013-11-20
My company has asked me to help configure an Exchange 2013 Server memory.

The basics are as follows:
100 users/mailboxes, at least a 50 GB mailbox store, 75 Mailboxes, 30-40 concurrent connections, 2 500 GB HDD's RAID 1 for Server 2012 OS, 2, 1 TB HDD's RAID1 for storage.

I need to know which RAM to use. We plan on using at least 32 GB RAM. Which RAM to go with? UDIMM or RDIMM?
Question by:EAS93
LVL 56

Accepted Solution

andyalder earned 2000 total points
ID: 39661902
Using HP prices you could use
4 off 647909-B21 8GB dual rank UDIMMs £116.16 = £464.64
2 off 672631-B21 16GB single rank RDIMMs £175 = £350

RDIMMs win on price in this case and generally they win on performance too although with only one DIMM per channel memory performance isn't worth taking into account. Memory speed matters with maths/graphics applications but with commercial apps such as Exchange it's RAM quantity that matters, not the speed.

Author Closing Comment

ID: 39663107
This seems to be the consensus, and what makes most sense. Thank you.

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