We've recently deployed Exchange 2010 and migrated 1300+ mailboxes from Exchange 2003 .... We've noticed that on a typical work day our new server is consuming a constant 18GB of memory (out of 20GB) ... The resource monitor shows that all the memory usage is being utilized by STORE.exe and multiple (6) processes of W3WP.exe... ...Is this normal?

Yeah, pretty much. Did you run the numbers against the MS calculator spreadsheet? That would have told you how much memory to put in the box. The mailbox size, messages transmitted and other factors affect sizing. I guess you would have run those numbers otherwise how would you have known to put 20GB in the box. "mfischer79" wrote in message news:b2a13f2a-3fd9-4235-87c7-e94e0900f1e6... We've recently deployed Exchange 2010 and migrated 1300+ mailboxes from Exchange 2003 .... We've noticed that on a typical work day our new server is consuming a constant 18GB of memory (out of 20GB) ... The resource monitor shows that all the memory usage is being utilized by STORE.exe and multiple (6) processes of W3WP.exe... ...Is this normal? Mark Arnold, Exchange MVP.

Thank You .. Just wasn't sure if it was supposed to "constantly consume" that amount... and needed to reassure myself...

If it doesnt have another application request it Windows will let the person who did ask for it, keep it. "mfischer79" wrote in message news:01ec8be1-8cee-45d6-9db0-7a9f3f089c91... Thank You .. Just wasn't sure if it was supposed to "constantly consume" that amount... and needed to reassure myself... Mark Arnold, Exchange MVP.