Fixed content consists of data such as digital images, e-mail messages, presentations, video content, medical images and check images that don't change over time. Unlike transaction-based data, whose usefulness is short, fixed content data must be kept for long periods of time, often to comply with retention periods and provisions that government regulations such as the Sarbanes-Oxley Act of 2002 have specified.
Some analysts say fixed content is growing in volume at a far faster rate than transaction-based data and could account for more than half of all corporate data within a few years.
Unlike transaction data, fixed content data can be stored on equipment that has subsecond access times. Because of this, it has traditionally been stored on write once read many times (WORM) tape, disk or optical media instead of more expensive spinning disks such as RAID arrays from EMC, Hitachi, HP, IBM or Sun, which transaction data requires.
Users are starting to use Advanced Technology Attachment (ATA) drives to store fixed content data. Commonly used in desktop computers, ATA drives are inexpensive and capable of writing data twice as fast and retrieving data five to ten times as fast as tape, Enterprise Storage Group says.
From Fixed content storage grabs users' attention, Network World, 05/26/03.
Legislation refocuses corporate reporting systems
Network World, 05/19/03.
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