Saturday, September 24, 2011

The Various Backup Methods Available

By Jason Sloan


In 1996, a major bank in Paris, the Credit Lyonnais, was struck by a fire. System admins run the risk of being roasted alive as they ran into the burning building to save backup tapes because they didn't have off-site copies. Countless delicate computer archives and information were lost.

As if any reminder were needed, there is definately a urgent need for business and people to conduct a frequent backup of their data. Here's a look at some of many information backup practices trusted by many worldwide. A data backup plan should consider accessibility, security and cost. Here's a review of the various backup storage media.

Magnetic tape

Magnetic tape has for a while been used as the data storage medium for large data, backup, file archiving and interchange. Since tape is a sequential access medium, access time is reasonably poor, but the rate of continuously writing on them can be very fast. Some new tape drives are even faster than modern hard disk drives. Perhaps the leading advantage of magnetic tape is that among the data storage media available, it is the oldest used and hence the most well-understood.

Hard Disk Drive

It used to be that hard disk drives were more costly than magnetic tape so reducing their preference as back up mediums. However , the capacity per price proportion of hard disks has considerably improved over the past few years so that hard disk drives are now commonly used for storage of bulk data.

The primary benefits of hard drives are low access times, availability, capacity and simplicity of use. The downside is that hard drives can easily be damaged during transport to off-site backup centers and stableness of data during storage is not known.

Floppy Disk

In the 80's and 90's floppy disks were the most common data backup storage media used but are now rendered obsolete due to their low capacity.

Optical Storage

Optical storage media include recordable and rewritable CD and DVD, RAM and WORM formats and Blu-ray discs. The benefits are their low cost and compact size. Some optical storage systems permit cataloguing of information without human contact on the disc media, so conserving data integrity.

Solid State Storage Media

USB memory cards and flash memory chips fall under this class. They generally have lower capacity per price proportion (though that's improving now) but they're generally used because of their ease of use and portability. However they can be fragile and subject to damage, the only option when this occurs is to contact a data recovery expert for help in a flash drive recovery.

Remote Backup Service

This makes reference to remote info storage hosted by private 3rd party service supplier through the net. As broadband web connections are reaching out across the globe, this info backup is becoming popular. A good feature of remote backup is they cannot be reached by catastrophic eventualities like fires, floods and earthquakes.

Conclusion

As there's not a single perfect backup methodology, I strongly suggest that it's smart to use combine 2 or even more of the above systems to make certain that your necessary data is safe and simple to access in an emergency.




About the Author:



No comments: