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Monitor, configure, and troubleshoot volumes. Basic volumes Include partitions and logical drives, as well as volumes created using Windows NT 4.0, such as volume sets, stripe sets, mirror sets, and stripe sets with parity. In Windows 2000, these volumes have been renamed to spanned volumes, striped volumes, mirrored volumes, and RAID-5 volumes. To format a basic volume, Right-click the partition, logical drive, or basic volume you want to format (or reformat), and then click Format. (You cannot format the system or boot partition) Spanned volumes A spanned volume is made up of disk space on more than one physical disk. You can add more space to a spanned volume by extending it at any time. Can be created only on dynamic disks You need at least two dynamic disks to create a spanned volume You can extend a spanned volume onto a maximum of 32 dynamic disks Can not be mirrored or striped You can delete only entire spanned volumes. Striped volumes A striped volume stores data in stripes on two or more physical disks. Data in a striped volume is allocated alternately and evenly (in stripes) to the disks of the striped volume. Striped volumes improve the speed of access to your hard disk. You need at least two dynamic disks to create a striped volume. You can create a striped volume onto a maximum of 32 disks. Striped volumes are not fault tolerant and cannot be extended or mirrored Mirrored volumes A mirrored volume is a fault-tolerant volume that duplicates your data on two physical disks. It provides data redundancy by using a copy (mirror) of the volume to duplicate the information contained in the volume. The mirror is located on a different disk. If one of the physical disks fails, the data on the failed disk becomes unavailable, but the system continues to operate using the unaffected disk. You can create mirrored volumes only on computers running Windows 2000 Server You need at least two dynamic disks to create a mirrored volume. Mirrored volumes are fault tolerant. Mirrored volumes cannot be extended or striped. The same drive letter is used for both copies (mirrors) of a mirrored volume. Slower than a RAID-5 volume in read operations but faster in write operations. RAID-5 volumes A RAID-5 volume is a fault-tolerant volume with data and parity striped intermittently across three or more physical disks. If a portion of a physical disk fails, you can recreate the data that was on the failed portion from the remaining data and parity. RAID-5 volumes are a good solution for data redundancy in a computer environment in which most activity consists of reading data. You can create RAID-5 volumes only on computers running Windows 2000 Server. You need at least three dynamic disks to create a RAID-5 volume. Can span a maximum of 32 disks. Provides fault tolerance Cannot be extended or mirrored