 | | Tape Drives: Still the Preferred Media for Data BackupsDespite all their features, however, hard disks are still machines invented by humans. They have a fixed life span after which there is a danger that they may go down anytime. This period is typically anywhere between three to five years. If a hard disk crashed due to any number of reasons hardware or software errors or natural or man-made disasters it can be catastrophic. All the data that you have stored on the disk can instantly become inaccessible and out of bounds. Total data loss causes many companies to fail each year as they cannot cope with the consequences they lose access to all their records and information and there are massive financial losses.
Therefore, the importance of taking regular data backups just cannot be over-emphasised. A variety of data backup media exist in the market, such as CDs, DVDs, USB drives and portable hard disks. However, the media that remains the most popular and effective for taking backups by companies is the tape drives. Just like hard drives rule in the world of primary storage for computers, tape drives rule the data archive market.
What are tape drives actually? Simply put, a tape drive consists of a large length of tape that is coated with a magnetic material, much like the platters of a hard disk carry a magnetic coating. This tape is wound around a couple of spools and the entire thing is enclosed in a plastic cartridge. The tape drive has a read / write head that is stationary and remains fixed at one place.
Unlike in a hard drive where the spindles rotate at the same place while the read / write head moves all over, in a tape drive it is the tape that has to move back and forth in front of the stationary head so that it can access data for writing, rewriting and deleting or saving. This kind of data access is called sequential access as the data can be only read strictly in sequence.
Tape drives use old technology of recording data, exactly like audio or video cassettes of yore. However, they are still quite popular and remain the best option for archiving a huge amount of important data. There are many reasons for this. For one, tape cartridges are quite cheap and easily available. No other data storage media can match the cost they offer in terms of per MB of storage.
The sequential data access has its benefits, even though the entire tape has to move back and forth before you can access a particular file. If a part of the tape gets corrupted, the entire data is not affected. You just have to cut that exact portion of tape, glue the ends together and you have the tape running again, offering you access to the rest of the data. Another benefit is that the tape cartridge that stores the data exists separately from the tape drive. In a hard disk, since the data-holding platters are built into the drive, any power surge can wipe out all the data.
A tape cartridge on the other hand has no parts through which electricity flows. In case of a lightning strike or power spike, only the tape drive is damaged, while the tape cartridge that stores the data remains safe and intact. It is easy to take a lot of tapes and store them in a safe place away from the computers. They are quite small and can be easily transported.
Data backup media has advanced in the last few years and has made rapid strides in terms of storage space. However, nothing can still come close to tape drives for the combination they offer of reliability and low cost for archiving a large amount of data for a long time. |
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| Photomatix Pro
by HDRsoft |  | HDR (High Dynamic Range) photo processing
Platform: Windows, Mac
Media: CD-ROM
| Product Features:- Creation HDR images
- Tone Mapping
- Exposure Fusion
- Automatic alignment hand-held photos
- Reduction of noise and chromatic aberrations in HDR images
| About the Product:
If you have ever photographed a high contrast scene, you know that even the best exposure will typically have blown out highlights and flat shadows.
Photomatix offers two ways to solve this problem:
- HDR Tone Mapping: Reveal highlight and shadow details in an HDR image created from multiple exposures.
- Exposure Fusion: Merge differently exposed photographs into one image with increased dynamic range.
Photomatix Pro is a stand-alone program that creates and processes HDR (High Dynamic Range) images, and runs on Mac OS X and Windows 98/Me/2000/XP/Vista. Some of the features of Photomatix Pro are also available as a Filter plug-in of Photoshop CS2/CS3/CS4 and an Edit plug-in of Aperture 2.1. | Benefits for Professional Photographers:
- Save on Lighting Equipment
No need to acquire expensive lighting equipment -and carry it- when you shoot high contrast scenes. Just enable the Auto Exposure Bracketing feature of your camera, and let Photomatix merge your photos into an image with extended dynamic range.
- Great Cloudy Day Pictures
Shadowless hazy sunlight or an overcast sky usually results in dull-looking photographs. The tone mapping tool of Photomatix Pro can turn them into great-looking images.
- Saving Time in Post-Processing
Photomatix Pro is designed for productivity -- automatic blending, unlimited stacking, easy comparison of results and batch processing save hours of masking and layers work in image editing programs.
- Well-Exposed Panoramas
A panoramic scene is almost always a high contrast scene -- you can't limit your view to areas with the same brightness when shooting a 360° panorama. By taking views under several exposures and processing them in Photomatix Pro, you can create a panorama that will show details in both the dark and bright areas of the scene. Photomatix Pro offers both exposure blending (also knows as exposure fusion) and HDR tone mapping.
| About the Developer:
HDRsoft develops innovative software in the field of High Dynamic Range imaging for photography.
The first version of its HDR software Photomatix was released in February 2003 as the result of a research project started in July 2002. The project was awarded a grant from the French Ministry of Research, as laureate of the national contest 2003 organized by ANVAR (National Agency for the Valuation of Research).
The company is owned and controlled by its two founding members, one of them being a professional photographer with over 25 years' experience. HDRsoft was previously known as MultimediaPhoto (the company changed its name in December 2006). |
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