Disk storage, parallel

Probe storage may be one of the unusual methods of the proposed recording since it does not involve the use of disks at all. Rather, probe storage technology could be implemented in something like the size of a t3q>ical semiconductor chip. It works like a scanning microscope, except that there is an array of these microscopes or probes that reads and writes the data. Each probe addresses an array of bits of information, and the probes write and read in parallel. Several media can-... 

The dynamic shear storage modulus (G1) and loss modulus (G") were measured from -150° to 50°C using the forced torsion fixture on a Rheometric Mechanical Spectrometer (RMS). When the storage modulus dropped below 10 Pa. this fixture became insensitive. For moduli less than 10 Pa, the parallel plate fixture with serrated disks was used. The parallel plate fixture was used to extend the dynamic mechanical measurements to high temperatures. Degradation above about 250°C dictated this temperature as an upper limit for RMS measurements. Further discussion of equations and use of these fixtures are given elsewhere (2,8). 

ROM and RAM, massive-storage hard-disk drives, a standard RS-232C interface operating serially at 9600 Baud (bit/s) and a parallel one transmitting at 100 Baud make up this section of the system. 

There are two principal ways to provide persistent storage in a parallel computer each node may have its own local disk, or a common storage device may be shared by all nodes and accessed via a network. The nodes in a parallel... 

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