T-V

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Track

A concentric ring on the disk where data is stored. Hard drive tracks differ from CD tracks which follow a spiral. CDs are designed for continuous play and the head moves across the disk at a constant speed. Hard disks, on the other hand, are designed for random access to the data on a single track so concentric rings work better.

User Quotas

Allows control over the amount of data any user can store in a directory or volume.

Virtual Cluster Number (VCN)

A sequential number relating to each extent of consecutive clusters on the disk that contain the file. If, for example, the file was fragmented into four pieces, the MFT record would list four VCNs (1, 2, 3, 4).

Volume

A storage unit made from free space on one or more disks. It can be formatted with a file system and assigned a drive letter. Essentially, a volume is a portion of a physical disk that acts like a physically separate entity.

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