50,000 Active mailboxes
16+ GB RAM for Retain Server (depending on environment)
RAM as required for Database on separate server
Retain Workers installed remotely on each post office in the message system
Disk Space is dependent on the amount of email being archived and length of retention time. It is recommended to estimate two years of storage and adding additional space as needed. Storage speed is the determining factor for performance.
SAN and local storage preferred.
NAS is not supported.