The digital video surveillance industry has been greatly enhanced by the latest advances in video compression, storage and pattern/face recognition software. The surveillance solutions market has moved from analog tape-based systems to digital hard drive-based systems. This 250GB SV35 7200.2 Ultra ATA/100 Internal Hard Drive takes advantage of this technology, allowing multiple data streams to be written at once, so multiple cameras can be linked to the same drive. The drive's video read/write profiles allow greater control over operation and its spin-down feature and PowerOn control allows for cooler operation and power savings.