will typically support 90 MB/s sustained throughput.
In a related study, researchers examining dust around the star HIP 8920 reported that they had found the best evidence yet for a massive debris disk
located close to a sunlike star.
Another program, CleanSweep, whose primary function is to remove extraneous instruction codes from a hard disk
after an application is erased, also can be programmed to zip only infrequently used files or applications and restore them when you want to use them.
Drive Technology and Its Future: This panel discusses solutions and technological challenges associated with today's hard disk
Additionally, because data is being backed up to disk
, not tape or virtual tape (see below), users must contend with the issue of file-system fragmentation, which can significantly affect read and write (i.
Further analysis by planetary scientists has shown that other effects could also cause a protoplanetary disk
to become unstable and break into large fragments.
A cache program reads frequently used information from the hard disk
and stores it in random access memory (RAM).
For optimized protection--but at a higher cost than either tape or ATA disk
--use RAID disk
packs, writing the data using redundancy (such as RAID 1+0 or RAID 5).
Over the next few years, as astronomers measured the age, composition, and distribution of these stars, they confirmed the existence of the so-called thick disk
Reference databases are now distributed routinely on optical disk
As far as cost is concerned, SAS specifications allow users the flexibility to create a large-scale disk
array by using SAS or SATA hard disks
at comparatively lower cost.
At the January meeting, two groups presented new infrared observations of Beta Pictoris' debris disk
Additionally, NearStore VTL transparently integrates with Decru DataFort appliances for encryption of data on disk
and tape for enterprise-wide data security.
How well does it integrate with a disk
library or tape library for longer-term retention?
In turn, the disk
begets small bodies called planetesimals, which can later cluster together through gravitational attraction and eventually grow into comets, asteroids, or planets.