154 CHAPTER 4 UNDERSTANDING EXCHANGE 2003 DATA STORAGE

154 CHAPTER 4 UNDERSTANDING EXCHANGE 2003 DATA STORAGE . You need to apply mailbox policies to different users to enforce mailbox limits and message size restrictions or to utilize message archiving. . You need special store event sinks to run for everyone in a particular mailbox store. You should be aware that creating an additional store initially requires approximately 10MB of RAM for the store to be mounted and approximately 25MB of virtual memory; as ESE DBA begins to allocate memory for caching, the memory will have to be split between all the mounted stores. Plus, Single Instance Storage is not preserved between the stores; thus, if you choose to break up the mailboxes on a server into two separate mailbox stores, plan to group the mailboxes based on which groups of people work together. NOTE Single Instance Storage is not preserved between stores. Two default stores exist on a newly installed Exchange 2003 server. For a server called SFOEX001, the mailbox store is called Mailbox Store (KILAUEA), and the database files are priv1.edb and priv1.stm. The public folder store on the same server is called Public Folder Store (KILAUEA); the database files are pub1.edb and pub1.stm. Creating a Store Creating additional stores is simple. Simply highlight a storage group that currently has fewer than five stores, right-click, and choose New Mailbox Store or New Public Store. Most of the properties of the mailbox and public stores are well documented in the online documentation, so I will just cover the important points and spare you the details that you can easily learn within the Exchange 2003 interface. When creating a mailbox store, all you have to provide is the store name. This is also referred to as the logical name, because the logical name shown in the Exchange System Manager hierarchy will not always match the actual names of the database files. Figure 4.12 shows a newly created mailbox store and the Exchange System Manager hierarchy. Figure 4.12 New mailbox store and the Exchange System Manager hierarchy

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