But despite these advancements, the market has taken clear steps over the past couple of years away from tape and toward disk
for backup and recovery.
Depending on the auditor's application, optical disk
storage may offer certain advantages over microfilm or microfiche.
These blue and red shifts broaden the spectrum of X rays emitted from the iron atoms in the accretion disk
. The greater the speed of the disk
, the more spread out the spectrum becomes.
In either approach, the backup data on disk
at the central location can be sent to tape if desired.
Astronomers observed a large gap between the outer and inner regions of the disk
surrounding star HD 142527.
One more thing about pumping the disks
: diodes* are used instead of lamps.
- A floating damper mechanism effectively dampens shock and vibration by wrapping the disk
with cushioning gels made of impact absorbing material.
"ADIC is advancing disk
backup into an important new phase by combining the characteristics of disk
and tape in an integrated system," says Dianne McAdam, Senior Analyst and Partner at Data Mobility Group.
A drive with removable, high-capacity, magnetic disk
media potentially meets these criteria.
All this is possible because the RAID hard disk
controller reconstructs the missing information from the information that resides on the remaining redundant healthy disks
Because some are random-access storage mediums, using the same technology as your hard disk
, applications stored on them can be run directly on your computer--with no need to first download them onto your hard disk
, as would be necessary with tape storage.
The Thinkpad is adequate for making simple presentations, but not for the multimedia programs with high-resolution graphics (that now take up more than 100 megabytes of disk
space) that I produce for the ACPE and The Informatics Institute.
Since one optical disk
can store up to 20,000 documents, the company has saved the cost of the complete system in floor-space savings alone.
You have to be conscientious to record what is on each disk
Scientists first imaged a single debris disk
around Beta Pictoris in 1985.