
116 2.6 Components That Scale
system. This is where you will benefit the most from using multiple spin-
dles and fast RAID arrays for your Exchange 2003 databases.
Nevertheless, do consider that this operation, although necessary, can
occur during user activity. If it does, it happens at a lower priority than nor-
mal transactions issued from user activity, whether MAPI-based or using
another protocol.
Where the clash can come in is if during that off-peak period, you also
have the desire to run online backup operations. Things are well designed,
however, in Exchange, and an online backup will suspend any online
defragmentation occurring. These operations ...