After UniRecovery RAID Data Recovery Labs, external hard drives provide great flexible storage option and mobile security by providing a backup option, but this advantage turns dangerous for users.
With storage capacity running in hundreds of gigabits, accompanied by high-speed data transfer, which have increased the flexibility, external hard drive to a laptop, desktop, server, storage media, camera or plug the iPod and sold at prices reasonablePopularity dramatically.
However, as the popularity of an external drive with backups and valuable data is always less just, for no apparent reason. Most of these units are often failure of famous brands like Lacie, Freecom and Omega and with the latest high Maxtor, Seagate or Western Digital hard drive models with a storage capacity of 320 GB or more on a single 400Gb disk.
According to a study conducted by 100,000 unitsCarnegie Mellon University, is widely believed Hard Disk Drive manipulate provider (MTTF) - mean time to failure. In fact, the median time to failure (MTTF) of disk drives, according to their manufacturers, vary from 1,000,000 to 1,500,000 hours, suggesting a nominal annual failure rate of no more than 0.88%.
While the study found that "up to 13% observed on some systems.". This suggests that the substitution field is a process quite different than one might be based on data providedMTTF.
It was also found that the failure rate is not constant with age, and that, rather than a significant infant mortality appears to be a significant effect of reducing wear. That is, replacement rates in research data grew constantly with age, an effect often assumed not only to set a nominal life of 5 years. The study, who also stressed that the study does not necessarily track the real disk errors, but the cases in which a customer decided toUnits had failed and had to be replaced. The study also explains that no vendor-specific error information, and that his goal is not to improve "the selection of the best and worst vendors" but to help them to lead, design and testing.
Even small differences in replacement rates between SCSI, FC and SATA drives, potentially an indication that the disk independent factors, such as operating conditions affect replacement rates more than component specific factors. On the other hand, sees only aExample of a customer rejecting an entire population of disks as a bad batch, in this case because of media error rates, and this instance involved SATA disks
The time between replacements, a proxy for time between failure is not well modeled by an exponential distribution and with a significant degree of correlation, including cars and long-range dependence.
In general, smooth inside of the housing are often poorly ventilated or not ventilated at all, externalHard drives assemblers are the cheapest available drives such as Maxtor and Seagate, combined with poorly ventilated enclosure casing, the combination is catastrophic for everyone, especially if the hard drive is a high capacity with crucial back-up data
For any given Lacie with multiple drives, this can be a terrible experience with RAID drives and data from more than 1 Terabit. Often with RAID external disk the frequent errors andThe damage is more extensive than the single digits. According to Haj Majed Aziz UniRecovery - RAID Data Recovery Labs, "many of the 1 terabyte LaCie external hard drives, Maxtor 250GB IDE RAID in poorly ventilated containers, if used regularly, particularly contained in an office environment, are fully catastrophe."
Hitachi has a hard, new heights of one terabyte (TB) has reached unveiled. His record looks like all the others, but uses perpendicular recording tomake room for all these data.
The current generation technology of LRT-Longitudinal Recording Technology, which was a bit of horizontal recordings, replaced with the inclusion of the bits vertically. However, the cost in the region of $ 18,000!
