The guide and tape contact is minimized in the DLT tape drive as the guide rollers have gentle wrap-angles around them. The tape reel's recorded side does not touch the guide rollers so it helps in minimizing the tape wear. The tape's reading and writing speed, deceleration and acceleration is controlled precisely by the automated dual motor mechanism in the DLT tape drive. The drive also has self cleaning system. DLT tape drive has 2 islands that are non-energized. They help in continuous cleaning of the DLT tape reel and ensure data integrity and precise contact of tape & drive head. Therefore the head life of the DLT tape drive prolongs to about 30,000 hours while that of the helical scan 8mm devices is about 2,000 hours.
Multiple channels are used concurrently for reading and recording of data in DLT tape drives. Data tape media in the DLT tape format is divided into horizontal parallel data tracks. The tape reel then runs past an immobile tape head and the Data is recorded onto the tape. Two channels can be recorded at the same time by the use of 2 write/read head elements that efficiently double the transfer speed at given possible recording density and tape drive speed.
The process of reading and backup of the large data blocks is speed because of the high transfer speed of DLT tape drive. MR (magneto-resistive) tape heads and the thin film further increase the recording capacity, bit density and the transfer rates. As the quantity of simultaneous channel recording increases, the transfer rate of data also increases. Overall throughput of the tape drive mainly relies on the tape drive's capability of tracking the data transfer speed of host system. If the host system's data speed is slower that that of the tape drive, then the performance degrades as the tape stops and has to frequently reposition.
The performance and output of DLT tape format is optimized as an efficient adaptive feature of buffering cache has been incorporated in the DLT tape drives so that maximum throughput could be achieved. The delays because of the repositioning are minimized and the throughput of tape drive is improved due to the feature of buffering cache. The buffering cache monitors the system of host and the operations of cache buffering are adjusted dynamically so that it can match with the host system's transfer rate.
The time needed for file location can be another criterion to check the performance of the tape drive. This measure is very much important in the applications (near line) like the manipulation of image which searches files frequently and restores or appends data. Search time is minimized in the Digital linear tape technology as at the data tape's logical end, there is there is located a file-mark index. The index holds the address of tape segments of each tape files.
The drive moves to the track that has the specific required file and then fast speed searching is performed to the file. With the help of this powerful feature, the DLT tape products are capable of finding file with average 45 seconds time in data tape cartridge of 20GB. Multi-layer mechanism helps in achieving this remarkable data integrity in DLT tape technology. Reed Solomon 16KB ECC with user data of 64 KB, error detection code (16 bit) for each data of 4 KB, cyclic redundancy code (64 bit) and overlapped cyclic redundancy code on each record of user is interleaved by the ASIC (application specific integrated circuit) chip.
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With its RFID-based intelliTRACKER(tm) product suite for item-level inventory tracking in retail, AbsoluteSKY is poised to capture a substantial share of the rapidly expanding Radio Frequency Identification market. "The RFID market is growing exponentially, with global RFID spending estimated to be between $3 billion and $6 billion worldwide by 2010," says John Frabasile, President and CEO of AbsoluteSKY (www.AbsoluteSKY.ca). "Our breakthrough technology enables retailers to have the real-time data they need to enhance their sales while decreasing labor costs."
The mass merchandising giant Wal-Mart made the first splash when it instituted an RFID pilot program in 2003 to track merchandise at the case and pallet level with the objective, among others, of improving the test stores' out-of-stock rate. In May of this year, researchers at the University of Arkansas announced that this simple RFID implementation decreased the out-of-stock rates for certain inventory items by as much as 62 percent.
While the Wal-Mart trial demonstrated the efficacy of RFID tagging in retail, intelliTRACKER's innovative and fully integrated RFID-based technology solution has the potential to create a sea change in the specialty retail industry. According to Frabasile, "Our integrated intelliTRACKER product suite addresses critical issues for the specialty retail industry, such as automating inventory tracking to the item-level, improving the customer experience, reducing shrinkage and gaining full control over loss prevention." intelliTRACKER's ability to track individual items from the factory floor through the transportation and distribution chain to the retail location and point-of-sale makes it unrivalled in the RFID industry.
By tagging each individual product with its own "license plate," AbsoluteSKY's RFID system provides the retailer with the real-time inventory data needed to maximize sales while cutting labor costs. For example, intelliTRACKER's item-level tracking allows retailers to accurately measure the sell-through rate of every item, giving them the ability to order additional fast-selling inventory and begin discounting slow-selling inventory at the proper time. In contrast, traditional inventory tracking systems often mislead retailers into thinking they have slow-selling inventory, when other factors - such as shoplifting or damaged goods - are the culprits in inventory depletion. This misinformation can lead to poor decisions about markdowns or prevent retailers from ordering additional inventory of quick-selling items.
The intelliTRACKER RFID product suite gives retailers the detailed information they need to make other types of informed decisions. By having actual sell-through rates - rather than waiting for periodic physical inventories - retailers can perform accurate vendor analyses, which will ultimately improve sales. In addition, missed sales opportunities lessen considerably, since intelliTRACKER alerts the merchant when the inventory of desirable sizes or items gets low, and identifies and accounts for damaged items.
Importantly, intelliTRACKER also smoothes the process of inter-store transfers, boosts the accuracy of automated replenishment systems, and provides style aging information for better markdown management.
According to Frabasile, retailers using the intelliTRACKER RFID product suite reap enormous benefits in saved labor costs. "In-store staff no longer has to count merchandise for any process, such as receipts, transfers in, transfers out, inventory, and sales. As a result, the retailer has an immediate and recurring savings in labor. If a retailer chooses to apply these saved hours to the selling floor to better serve customers, it's virtually certain that he or she will see an up-tick in sales."
With the RFID industry expected to grow exponentially in the next few years, AbsoluteSKY is far ahead of the curve. "Many companies that see RFID as the wave of the future have products in development," says Frabasile. "But the right combination of breakthrough technology and business acumen has already been integrated into our intelliTRACKER RFID product suite."
In other words, for AbsoluteSKY, the future is now.
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