The first hard disk drive on the planet, the r.a.m.a.c (random access memory for accounting and control), was made by IBM in the nineteen fifties. It was as big as a large wardrobe and could contain a capacity of five whole megabytes! The archaic machine cost about fifty thousand US dollars at the time. The price now per gigabyte of memory when talking about hard disk drives less than a dollar, or 1 ten-millionth of what it was sixty years ago. This development rate has proven faster than that of telecommunications data transfer rates and of semi-conductor density increases.
Hard disk drives store their sequence of data bits in linear tracks, which follow around a magnetic disk in concentric circles. In order to fit more data over a smaller area, the gaps between the data tracks must reduce, as well as the spacing between the bits. These dimension quantities are measured in bits per inch (in a circumference-wise direction), and tracks per inch (in a radius-wise direction). These get smaller as the technology gets better; also, one must take into account the tiny areas or gaps between tracks that are there to compensate for a slightly misaligned reader head, so it doesn't read the neighboring tracks.
The method of measuring the total quantity of data storable over a surface area is quantity per square inch, these days, gigabits per square inch. This measurement is a combination of your bits per inch and tracks per inch. It is known as the areal density. This density has, since that first wardrobe hard drive, had a steady increase at 30 percent per year, and from the early nineties when magneto head resistance was brought about, jumped to 60. Then again in the late nineties, it leaped up to 100 percent yearly increase with the introduction of giant magnet resistance head technology. Now though, the rate of growth has slowed to under 60 percent.
Partition The Hard Disk
My computer to me is a very important machine. It is at the centre of my work-life. My very important data resides on it, the type of data which I just cannot do without. This includes my family pictures, photos of my travel to different countries, the accounting files of my small publishing business and, most of all, the only copy of the latest book I am writing.
It had started off as ordinary day and there was nothing unusual about it. I prepared to start my day early morning, with a steaming mug of hot coffee in hand. I was quite excited as I was almost going to finish the last chapter of a travelogue I was writing about my travels to an exotic country. The publisher’s deadline was dangerously close. I had to deliver the entire finished manuscript in a few days.
As I plonked myself in my comfortable chair, I switched the computer on. I expected to see the screen come alive with the reassuring and welcoming Windows boot-up screen. However, nothing of the sort happened and the monitor screen remained dark and dead. I could hear an ominous screeching sound coming from the CPU. What was it? What happened to the computer I loved and trusted so much? I tried switching it on and off many times, but with the same result.
After mulling over my predicament for a few minutes – with the publisher’s deadline looming ahead – I called up a friend who knew a bit about computers. He came over, had a look at the problem and pronounced: “The hard disk has crashed. It is a serious situation." My entire data was lost. I had no idea what to do. If I couldn’t get the hard disk working again, I was in real trouble. That is when it dawned on me how important it was always to keep important files on one’s hard drive backed up on other storage media such as DVDs, CDs, tape drives or portable hard disks.
So what was the solution? My friend told me that little could be done at home. We had to take professional help and call a data-recovery company. But how to go about finding one? I went to my friend’s home and Googled around for a data recovery outfit in my area. I discovered that there were about a dozen prominent ones. Now the problem arose – which one to choose? My data was very precious, and I just couldn’t give the custody of my damaged hard drive to anyone. What if they were incompetent and the problem became worse?
Choosing a company involved going through the website of each, reading the customer testimonials, the charges that would be incurred and the facilities offered to customers such as “no recovery, no charges." What was also very important to me was that a recovery company should give a free diagnosis and estimate as to how much it would cost me to get my important files recovered. The service should also be quick, as my deadline was nearing and I did not want to wait till eternity to get my data back.
After much deliberation, I chose Fields Data Recovery. I couriered the hard drive to them. Their engineers took the drive to a clean room, opened it and diagnosed the problem. The read / write head had come off its hinge and crashed on the platter surface. It had scratched the surface, but fortunately not where my important files were located. The company said this is a routine situation they face with many such cases coming to them every week, and they had developed procedures and specialised software to recover data from such hard drives.
The estimate they gave for recovering my files was reasonable, considering what other companies were charging. My manuscript was worth its weight in gold for me, and I gave the go-ahead. Within three days, I got all my data back neatly copied on a new hard disk. I was thus saved from a terrible disaster. Now I make it a point to never blindly trust my computer or continue working on the assumption that nothing will ever go wrong.
I have also invested some money in buying a portable hard disk. It is a wonderful device that stays attached to my computer and keeps taking data backups at regular intervals. Now, whenever my hard disk crashes on me, I have an option. I will just recopy data from my portable hard disk to a new one and it will be business as usual.
Both Jack Robinson & James Walsh are contributors for EditorialToday. The above articles have been edited for relevancy and timeliness. All write-ups, reviews, tips and guides published by EditorialToday.com and its partners or affiliates are for informational purposes only. They should not be used for any legal or any other type of advice. We do not endorse any author, contributor, writer or article posted by our team.
James Walsh has sinced written about articles on various topics from Small Business, Binding Machines and Divorce and Infidelity. James Walsh is a freelance writer and copy editor. If you are concerned about data loss and would like more information on see. James Walsh's top article generates over 368000 views. to your Favourites.
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