The US Department of Defense has an often-quoted specification for data shredding on magnetic disk
It has recently been doubling every 8 to 12 months in magnetic disk
storage and about every 24 months in MO storage, according to DISK/TREND, Inc., a market research firm in Mountain View, Calif.
Porting these products to 64-bit systems has allowed them to use more memory, although it is still secondary to their use of magnetic disk
"The parametric limit for magnetic disk
drive technology is about 16,000 Mbits/|cm.sup.2~, which gives us a lot of room for improvements," says Scranton.
Other types of nonvolatile microcircuit memories are available commercially, but magnetic disks
remain the cheaper alternative.
The speed of Harris County's current system is due partly to its use of AFIS 2000 technology: when Printrak installed Harris County's system, they included a two-finger magnetic disk
database, which allowed for much faster searches than an optical disk system.
Two magnetic disks
come standard with every Storage Machine.
Single-chamber design combines SEM with EDX and Auger spectroscopy to improve process development of magnetic disks
The RMD-5100-S delivers access times significantly faster than other magneto-optic drives, and faster than many fixed magnetic disks
, making the drive more than adequate as a primary storage device.
Systems using rewritable magnetic disks
cannot provide the same level of audit trail verification as true Write Once media and are challenged to meet archival storage regulations that demand stringent data authentication.
Conventional magnetic disks
store data in bits on the surface.
But with the use of a hierarchical storage server-high-speed magnetic disks
for fast active-file access and optical disks for long-term file storage-the impossible has come true.