technology is three to ten times more expensive than its cousin tape.
When a disk
is viewed edge-on from Earth, material heading toward the back side of the black hole recedes from our planet, while material spinning toward the front approaches us.
The astronomers also noted a gap separating an inner and outer portion of the disk
. They suspect that a planet carved out this gap as it emerged from the disk
some time in the distant past.
(C[O.sub.2] lasers can be manipulated by robots, but it is a far more complex setup than with the fiber.) What all of this means is that with a disk
laser it is possible to put a scanning head right on the end of a robot arm (e.g., TRUMPF has one that measures 280 x 300 x 174 mm), so the beam manipulation can be a function of both the six axes of the robot and the two of the mirrors.
The report concluded that any perceived advantage in ease of use for the disk
system is not justified by the additional overall system cost for a 12TB solution.
reports that companies have spent $40 billion to store 1,400 million terabytes of data on magnetic disk
. Even though storage requirements have now started to increase at more than 100 percent annually, technology is improving in cost/performance at only 35 percent each year.
M-Systems offers a complete line of solid-state flash disk
products in 2.5-inch IDE, 2.5-inch Narrow SCSI, 3.5-inch Narrow SCSI, and 3.5-inch Ultra-Wide SCSI form factors.
Some RAID subsystems allow a technician to remove a failing hard disk
drive without shutting down a server.
In the 1980s, when computer users first realized that storing data on floppy disks
was inefficient (since the highest capacity floppy holds a maximum of 1.4 Mb), about their only backup choice was tape.
The other solution is to buy new data storage hardware, which comes in a mind-boggling number of formats, including tape backup systems, high-capacity removable disks
, WORM (Write Once, Read Many) drives and erasable optical drives.
A computer model developed by a separate team of researchers suggests that the second disk
was created when a massive, unseen planet in a tilted orbit lured bits of rock and ice--leftovers from the planet-making process--from the main disk
One can connect as many disks
as desired through expanders or port multipliers to achieve connectivity or availability through a RAID volume.
SST brings mass-storage capability to a whole new series of applications by offering its flash-based ATA Flash Disk
Controller as a stand-alone product.
Most offer the ability to search and save by project or client name, and allow cutting and pasting to a clipboard, saving to a word processor format or printing segments to disk
. Most are tied in with an on-line service (either the vendor's own or that of a specialty vendor) for daily update information.
In addition, DOS's backup program does not test for corrupted files or for damaged floppy disks
as most other backup utilities do.