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The Zip drive is a "superfloppy" disk drive that has all of the standard 3 + 1 ⁄ 2-inch floppy drive's convenience, but with much greater capacity options and with performance that is much improved over a standard floppy drive. However, Zip disk housings are similar to but slightly larger than those of standard 3 + 1 ⁄ 2-inch floppy disks. [2]
A bypass switch (or bypass TAP) is a hardware device that provides a fail-safe access port for an in-line active security appliance such as an intrusion prevention system (IPS), next generation firewall (NGFW), etc. Active, in-line security appliances are single points of failure in live computer networks because if the appliance loses power, experiences a software failure, or is taken off ...
A disk compression software utility increases the amount of information that can be stored on a hard disk drive of given size. Unlike a file compression utility, which compresses only specified files—and which requires the user to designate the files to be compressed—an on-the-fly disk compression utility works automatically through resident software without the user needing to be aware of ...
File locking is a mechanism that restricts access to a computer file, or to a region of a file, by allowing only one user or process to modify or delete it at a specific time, and preventing reading of the file while it's being modified or deleted.
Though Chubby was designed as a lock service, it is now heavily used inside Google as a name server, supplanting DNS. [5] Apache ZooKeeper, which was created at Yahoo, is open-source software and can be used to perform distributed locks [6] as well. Etcd is open-source software, developed at CoreOS under the Apache License. [7]
In the most common usage scenario, the user would have one hard drive in the computer, with all the space allocated to one partition (usually as drive C:). The software would compress the entire partition contents into one large file in the root directory. On booting the system, the driver would allocate this large file as drive C:, enabling ...
In software engineering, a spinlock is a lock that causes a thread trying to acquire it to simply wait in a loop ("spin") while repeatedly checking whether the lock is available. Since the thread remains active but is not performing a useful task, the use of such a lock is a kind of busy waiting .
In some instances, the lock would prevent the case from being opened to inhibit the theft or modification of internal components. In other cases, the lock was used to forbid unauthorized access to the computer by disabling the power supply, hard drive, or keyboard. [1]