The HP LTO Ultrium media cartridge is designed and manufactured to optimize both media and propel performance. HP conducted an experiment among contrastive brands of LTO 3 ultrium backup material cartridges. The tests prove that users of HP LTO3 Ultrium counsel cartridges could access twice the information influence per backup and significantly worthier reliability. HP branded LTO3 Ultrium news cartridges if upto three times as multifarious continuously crowned backup and restore cycles. The value of HP LTO-3 Ultrium cartridge is less than the other competing brands. Testing in highest climatic conditions keep demonstrated the reliability of HP LTO Ultrium media, where facts has been fully recovered from tapes that include withstood the world's most uttermost environments.

The assessment engineers took four LTO3 Ultrium RW cartridges. The two tapes were from HP and two from another relevant brand and tested them in four HP StorageWorks Ultrium 960 drives. They catechism was conducted in a controlled area of 74 F and relative humidity of 15%.

In the head sheet of the confirmation procedure, the cartridges were place 100 continuous filled volumes, 400-GB native capacity, backup and restore cycles. This method that the complete was 200 full-volume operations. The bit misapprehension degree BER was measured every 2 GB throughout the process.

Data misconception rates bring the most informative degree of performance. The data scale as well relates to how the tape is manufactured, the expression characteristics of the tape, its sort of coating, and the surface roughness. Provided the inaccuracy rates are high, the manage has to job insoluble to verify that data is activity saved or restored properly.

High wrongdoing ratio come about when the expression becomes noisy and distorted. In the worst case, mistake percentage levels finally span a speck where the ride cannot cope with correcting mistakes and data may be missing altogether.

HP has developed proprietary software for the HP drives, this software acts adoration a effectual tape microscope and allows the user to analyse the performance of the backup and restore cycles in far extended reality than would otherwise be feasible using off the shelf backup applications. In circuit to effect that the results of the testing procedure were not overly influenced by the performance of indivisible drives, the HP LTO3 Ultrium cartridges in the Drives were exchanged with the other meaningful brand tape cartridges for the moment leaf of the tests.

In the second page of the tests, the backup tape cartridges were once again tested throughout 100 continual complete volumes, 400-GB native capacity. The backup, restore cycles and the bit fallacy standard was again measured every 2 GB throughout the process. This brought the total symbol of backup and restore cycles throughout the unabridged countdown to 400 (200 full-volume backup cycles and 200 full-volume restore cycles). The criterion fault rates were then calculated for everyone adequate book and any variation in performance during the succession of the tests could then be easily earnest by observing any interchange in wrong rate.

The results for each of the two HP LTO3 Ultrium cartridges, in each of the drives in which they were tested, showed consistently low and steady error rates throughout the 200 continual backup and 200 continual restore cycles. The size of the data backed up each cycle was very measured to lock on that the backup cartridge was continually providing the all-inclusive maximum 400 GB of data available. After writing 80,000 GB of data, the HP cartridges were yet providing optimum performance and maximum potency without risk of data loss

The results for each of the two Other Influential Brand cartridges, in each of the drives in which they were tested, were equally as consistent on the other hand showed a identical differential picture. After honest 30 abundant backup and 30 restore cycles, less than a third of the bag fini the inceptive chapter of the test, performance began to degrade. After no augmented than 60 continual backup and 60 restore cycles, the error rates were so high, on both cartridges, that it was no longer viable to gross a plentiful 400-GB backup operation.

Two at variance types of failures occurred in the tests. These failures were directly related to the bankrupt error proportion performance. Both failure types meant that it was not doable to back up the maximum 400 GB of data. The front type of failure occurred as a conclusion of reaching the stop of the tape before completing the entire force 400 GB backup operation.

Numerous repeated attempts to comp some of the initial data were necessary, which resulted in using added tape with the other salient brand cartridges, than was required when using the HP brand backup cartridges. The second type of failure was further related to the beggarly error rate performance of the other Brand cartridges. However, this type of failure was due to it no longer life practicable to verify the exactness of the written data all the more after repeated attempts, causing the coerce to fail and abort the backup system completely. Both types of failures meant a cleaning cartridge needed to be inserted before the analysis procedure could continue.

The available competence extremely deteriorated with sometimes as slender as 50% of the total energy career utilized before reaching the confine of the tape. Other valuable brand cartridges did not exhaustive the unabridged 100 backup and 100 restore cycles in either of the drives in which they were tested.

The formidable error rates can heavy to:

- Reduced cartridge capacity, so you obtain to pay for amassed cartridges to back up the

- duplicate extent of data.

- Failed backup and restore operations whereas there are as well copious errors to correct. You lose your data.

- Extra frequent employment of a cleaning cartridge.

- Lower transfer rates (that is, poorer performance) now the guide testament repeatedly dry run to re-write or re-read the corresponding user data until it has been able to successfully verify that the written or restored data is 100% accurate.