background preloader

Racked National

Racked National

Gutmann method The selection of patterns assumes that the user does not know the encoding mechanism used by the drive, so it includes patterns designed specifically for three types of drives. A user who knows which type of encoding the drive uses can choose only those patterns intended for their drive. A drive with a different encoding mechanism would need different patterns. Most of the patterns in the Gutmann method were designed for older MFM/RLL encoded disks. The method was first presented in the paper Secure Deletion of Data from Magnetic and Solid-State Memory, in July 1996. Technical overview[edit] One standard way to recover data that has been overwritten on a hard drive is to capture and process the analog signal obtained from the drive's read/write head prior to this analog signal being digitized. For example: Analog signal: +11.1 -8.9 +9.1 -11.1 +10.9 -9.1 Ideal Digital signal: +10.0 -10.0 +10.0 -10.0 +10.0 -10.0 Difference: +1.1 +1.1 -0.9 -1.1 +0.9 +0.9 Previous signal: +11 +11 -9 -11 +9 +9

SOMA Magazine Data remanence Data remanence is the residual representation of digital data that remains even after attempts have been made to remove or erase the data. This residue may result from data being left intact by a nominal file deletion operation, by reformatting of storage media that does not remove data previously written to the media, or through physical properties of the storage media that allow previously written data to be recovered. Data remanence may make inadvertent disclosure of sensitive information possible should the storage media be released into an uncontrolled environment (e.g., thrown in the trash, or lost). Various techniques have been developed to counter data remanence. These techniques are classified as clearing, purging/sanitizing or destruction. Several standards exist for the secure removal of data and the elimination of data remanence. Causes[edit] Finally, even when the storage media is overwritten, physical properties of the media may permit recovery of the previous contents.

Letter (paper size) A Letter size page. Comparison of Letter (shaded light blue) and Government letter sizes with some similar paper and photographic paper sizes. Letter or US Letter is a paper size for office use. It is the most common type in North America, Bolivia, Colombia, Venezuela, the Philippines and Chile.[1] It measures 8.5 by 11 inches (215.9 mm x 279.4 mm). Ronald Reagan made this the paper size for U.S. federal forms in the early 1980s; previously, the smaller "official" Government letter size, 8 in × 10.5 in (203.2 mm × 266.7 mm), was used.[2] In the U.S., paper density is usually measured in "pounds per ream" (of 500 sheets). Unlike the A4 (210 × 297 mm) international standard (ISO) paper sizes which are used in most countries in the world today, the origin of the dimensions of letter size paper are lost in tradition. The related paper size known as half letter, statement, or organizer L is exactly one half of the US letter size (8.5 × 5.5 in).

Data recovery Another scenario involves a disk-level failure, such as a compromised file system or disk partition, or a hard disk failure. In any of these cases, the data cannot be easily read. Depending on the situation, solutions involve repairing the file system, partition table or master boot record, or hard disk recovery techniques ranging from software-based recovery of corrupted data, hardware-software based recovery of damaged service areas (also known as the hard drive's "firmware"), to hardware replacement on a physically damaged disk. If hard disk recovery is necessary, the disk itself has typically failed permanently, and the focus is rather on a one-time recovery, salvaging whatever data can be read. In a third scenario, files have been "deleted" from a storage medium. The term "data recovery" is also used in the context of forensic applications or espionage, where data which has been encrypted or hidden, rather than damaged, is recovered.[1] Physical damage[edit] Recovery techniques[edit]

Quadcharge universal charging station - gizmag Article Tidy solution to charging multiple devices Image Gallery (5 images) August 28, 2007 The Quadcharge is an inexpensive, all in one hub that allows you to charge four devices simultaneously whilst decreasing the number of AC adaptors that need to be connected to a power source, while at the same time cleaning up the tangled web of cords that otherwise pervade your kitchen bench-top or home office space. View all The streamlined, simple design of the Quadcharge is aimed at hiding all of the wires normally dangling from your wall by using only one outgoing power cord. The advantages of not having a number of AC power adaptors connected to one charging station is that it will reduce the risk of overheating and fire. The station is compatible with Gomadic’s TipExchange feature, which allows you to swap the charging tips to suit different devices. This simple solution to charging all mobile gadgets costs US$49.95 and comes with a lifetime warranty. Related Articles

SpongeBob Products - SpongeBob - 3831 - Rocket Ride Arrgh! Captain SpongeBob and his first mate Patrick have found an old treasure map and are searching for the treasure. Barnacles! The Flying Dutchman is here on his ghostly ship. Help keep him at bay using the bub ble blaster before our friends are made to walk the plank! Includes 3 minifigures: Pirate SpongeBob, Pirate Patrick and The Flying Dutchman. Overall: Rating Snapshot (20 reviews) Play Experience: Value for Money: 18 of 2090%of reviewers would recommend this product.

Discover 6 Sigma - Online Six Sigma Resources

Related: