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| Related Articles |
| The Power of Disk-based Backup: Advanced Data De-Duplication Article |
01 January 0001 |
| Including disk in the backup strategy makes sense for many companies, but most can't afford to keep more than a few days of their backup data on fast recovery media- the cost of conventional RAID arrays is simply too high.
Published by: Quantum |
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| 5 RAID Data Recovery Prevention Tips |
03 May 2007 |
| If you have spent the time to increase your computers performance by setting up... |
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| RAID Data Recovery for Those Who Have Crashed Burned and Learned |
03 May 2007 |
| If you want to know about RAID data recovery, it means either one of two things.... |
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| Understanding RAID data recovery |
03 May 2007 |
| RAID data recovery is, of course, the act of recovering data from a RAID system.... |
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| Fujitsu Siemens offers SAN bundle for small businesses |
11 December 2006 |
| (InfoWorld) - Following a similar move by Hewlett-Packard, Fujitsu Siemens Computers plans to announce a packaged storage area network (SAN) product on Thursday aimed at small and medium-size businesses.
The bundle will comprise Fujitsu Siemens' FibreCAT SX RAID storage devices, switches from Brocade Communications Systems,. and host bus adapters from Emulex. It will be priced under €8,000 ($10,566), Fujitsu Siemens said.
Business-class data protection has traditionally been expensive and difficult to deploy, so many smaller businesses have shied away from SANs. The bundled product, which customers can order under a single part number, aims to cut down on the complexity of choosing components to put together a SAN. It also aims to simplify installation and operation, Fujitsu Siemens said.
Businesses that buy the package will be able to expand their SAN as their needs change, according to the company.
The demand for greater security and compliance are driving growth in the market for SANs, Fujitsu Siemens said.
In October, HP introduced SAN products also aimed at smaller businesses. It includes a blade storage device, a starter kit for simplifying the set-up and operation of SANs, and a virtual tape technology for data backup and recovery. HP's starter kit also included components from Emulex and Brocade. |
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| Amadeus to provide travel booking data to the United Nations |
28 November 2007 |
| Statistics will be used to monitor and predict global trends |
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| Weak orders hit US firms |
28 November 2007 |
| US factory orders fell for the third month in a row, a further sign of the slowing economy, government data shows.
a survey shows. |
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| Discs 'worth £1.5bn' to criminals |
28 November 2007 |
| Two missing discs containing personal data of 25 million people could be worth £1.5bn to criminals, say the Lib Dems. |
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| Programming less |
28 November 2007 |
| A programming lesson I keep relearning.
The design of the central data structure of an app determines the quality of the app, in every way.
Any extra thought that goes into this, will pay off in:
1. Maintainability of the code.
2. Size of the code (you'll write less code with a well thought-out central data structure).
3. Simplicity of the user interface (the structure inevitably shows through in the UI).
4. Ability to respond to feature requests.
5. Adapt to new hardware, OS changes, other apps.
6. More "it just works" experiences.
This is why it's sometimes the right thing to start over from scratch. Programmers often want to start over because they look at the code and it looks complicated, and they think they can make it simpler if they start over. They're right, of course, it will be simpler when they start over, because it won't do nearly as much as the mature product does. Once they finish building out the feature set, it may well be just as complicated.
It's a judgement call. I remember looking at the source of Unix kernel for the first time as a grad student in Wisconsin, and being amazed at the simplicity and obviousness of the code. I couldn't believe something so simple actually worked. Your code at its kernel level must have this simplicity. But at the edges, where you're accomdating the minds of users, inevitably it gets a little messy. The key thing to look for is how hard is it to add a completely new feature. It should be easy to do that. If it's not, it's likely because of a poorly organized (and therefore not well-understood) central data structure.
I've rewritten apps many times, over many years, because when I wrote the first or second versions, I didn't understand the problem well enough, and the code had turned into a morass of patches and workarounds.
Right now I'm recoding the internals of a special-purpose aggregator. I've written many of these, over the years, always quickly, trying to get something running fast, and then lived with data structures that resulted. This time I'm going slowly and carefully, with an installed base of one (me) and ripping up the pavement whenever I find even a slightly better way of doing something. I have other users who are waiting, but that's life.
5/7/97: "When a programmer catches fire it's because he or she groks the system, its underlying truth has been revealed." |
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| Google service uses cell towers to locate users |
28 November 2007 |
| Google launched a location service for mobile users on Wednesday that doesn't rely on GPS.Google Maps with My Location, currently in beta, locates users who don't have GPS-enabled phones based on their location to nearby cell towers. The result isn't as accurate as GPS but works for people who lack the positioning technology in their phones."It helps users speed up search by showing the general neighborhood they're in," said Steve Lee, product manager at Google for the service. Without the location service, users must type in their address or neighborhood in order to find nearby businesses using Google Maps.Google Maps with My Location will use GPS data to locate the user if the phone has the capability. But even for users of GPS-enabled phones, the cell location service might be useful, Lee said. That's because the cell tower feature works better indoors than GPS, it doesn't drain the phone battery as quickly and can bring up a result quicker, he said.The service could be useful to a person who might be traveling in an unfamiliar city and looking for restaurants or other businesses. A user pulls up Google Maps and hits the zero key on the phone. A blue dot will appear on the map in the user's location. If the service used GPS in the phone, the blue dot will be solid. If the service used cell towers to determine the location, the blue dot will have a halo around it, indicating that the location isn't precise. The user can then search for nearby businesses.Google says the cell tower technique will locate the user within about 1000 meters. It doesn't use triangulation, which calculates a user location based on the user's distance to three nearby towers. Instead, it essentially shows the range of the tower that the user's phone is connecting to.But the accuracy should improve as more people use the service, Lee said. That's because Google is keeping a database of location queries, minus any personal information like individual phone numbers or names. That will allow Google to learn more precise information about the range of each tower so that it can deliver a more accurate location area to users. The coverage area of cell towers can vary from about a quarter of a mile to several miles based on whether the tower is in an urban or rural area.For now, Google Maps with My Location doesn't feature any advertising, but it could in the future. "This product makes a lot of sense for advertising," Lee said.In order to use the service, phone owners must download a free application from Google. The application will work on BlackBerry, Windows Mobile, and Symbian phones as well as many phones that support Java. A few notable exceptions include the Samsung Blackjack, Moto Q, and Palm Treo 700W, which don't support the APIs Google requires to find cell towers, Lee said. |
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