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Archive for May, 2011

Music MP3 Downloads

Monday, May 9th, 2011

Portable music players are all the rage, everyone either has one or wants one. With all that, technology floating around there had to be a place to get the music for them. Enter the music mp3 download, one click of the mouse will show you multiple thousands of sites that offer just that. A music mp3 download is a standard music file that has been compressed and can be downloaded from the internet into an mp3 player. The difference between these files and a typical music file is the size; technology has made it possible to shrink the size of the file without losing any information. Translation? Music mp3 downloads are smaller but sound exactly the same as the original.

Typically, you can find many good deals on the internet for mp3 downloads. Often times a single song will be as low as eighty-nine cents plus no shipping! Simply put in your bank information and you are set. Sites like these may have entire albums for as little as $5 or combinations from the same group or artist. When looking for a reliable site for your music mp3 download you will find there are many to choose from. Amazon has a music download section as do many of the official sites of your favorite group or artist. The site may have access to the music downloads or a link to a reliable site where you can get them.

Once you have browsed around for a while, you will see many offers free mp3 downloads. Many of these will be good sites with a legitimate product however; you may want to use a pre-loaded card with limited funds if you are asked for a credit card. Often sites like these will get your information under the pretense of assuring you are at least 18, others are just getting your card information to defraud you. A variation on free music mp3 downloads are the sites that offer them for your phone. All they ask is for your phone number so they can send you the “free” music. Be careful in the fine print you could be agreeing to a monthly membership that will be added to your phone bill!

A good way to avoid the problems with unscrupulous web site owners is to purchase your music mp3 download at a local retailer. They have selections from many artists or you can buy a prepaid card that you use online. Either way you are protecting your bank account while still enjoying your mp3 player. Music mp3 downloads are definitely here to stay and with a little research and proper amount of caution you will have nothing to worry about..

SCSI Hot Swap Hard Disks

Saturday, May 7th, 2011

When using and operating a high availability server or system within an organisation, you need to consider that there may be times when hardware fails and the system may be offline. This is par for the course when it comes to computers. No system in 100% fail safe as there are so many things that can go wrong. One of the main issues that IT departments face is loss of data if a disk fails. A way to overcome this issue is to employ a level of RAID and use SCSI hot swap disks.

Using RAID allows you to spread your data across many disk drives in the server. This process has several levels of complexity and redundancy and allows you to recover information from a failed disk using parity information, written to different disks. A little like an algebra sum, where 1 + a = 3 (a = 2), RAID allows the data to be recreated when the faulty hard disk is replaced. The server still operates, but it has to work out the sums on its own, making it slightly slower.

In the past, it was a requirement that the server hardware was powered off to replace the hard disk, but hot swap drives and caddies have allowed the server to continue to operate whilst the data is recovered. SCSI hot swap drives allow you to remove the faulty hard disk and insert a new one without having to power off any part of the server. This allows the server to continue running whilst the new disks is restored or repaired and made part of the RAID array. Each major manufacturer of server hardware has a slightly different implementation of the hot swap technology. The SCSI hard disk sits in a caddy or tray which is specific to each server brand. The SCSI disk itself is sometimes independent to the server brand, and therefore any similar size SCSI disk can be used..