TAILIEUCHUNG - Exchange SQL And IIS- P101

Exchange SQL And IIS- P101:The following legacy Exchange features have been de-emphasized in Exchange Server 2007. What does that mean? It means that these features are still included in the Exchange product, but they’re not prioritized anymore, and will most likely disappear in the next Exchange release after Exchange Server 2007 | High Availability for Exchange 2007 Mailbox Servers Chapter 8 477 When you re partitioning the disks that should be storing the passive copies your storage groups it is best practice to take advantage of mount points because they will let you surpass the 26-drive-letter limitation that exists on a Windows 2003 server. If you end up in a situation where you need to switch to a passive copy of a storage group using mount points will make the recovery process much more painless because you can quickly change drive letters and paths. As has been the case with mailbox stores and log files in previous versions of Exchange it s also recommended that you place the databases and log files for a passive copy of a storage group on separate disks just as you do with active copies of storage groups. You should of course also make sure that you partition the disks that are to be used for the passive copies of the storage groups so they are at least the same size at the disks holding the active storage group copies. Finally keep in mind that a Mailbox Server with LCR enabled will use approximately 30 40 percent more CPU and memory than a Mailbox Server on which LCR hasn t been enabled. These extra resources are primarily used by log file verification as well as log file replay. Tip_ LCR enables you to offload Volume ShadowCopy Service VSS backups from the active storage group to the passive storage group which will preserve disk I O on the disks on which the active storage group is located. This also means that you can perform restores from a passive copy of a storage group. As you can understand LCR is an ideal solution for small or medium-sized organizations because the functionality allows rapid recovery from database issues and requires only an extra set of disks for the database copies. LCR increases the availability of databases on an Exchange 2007 standalone server in an affordable way. For small shops .

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