what is a SSD ?

SSD (Solid State Drive) is one of the major storage media other than hard disk. In a computer, SSD and hard disk serves as a medium to put all the data. Booting a computer is also used both of these.

Here are a few things about SSD:

A. TRIM

     TRIM is a command directed to the firmware of the SSD. If you do not already know, the firmware is the same as the BIOS of the computer in general.

A storage media will always write and read data. When deleting a data, it is actually also a writing activity data as well. In a hard disk, data removal activity is not completely erased. Deleted is a link that refers to the data in the data series is called the Table Of Content. When there is data that will be written in the (sector) is the same, the new data will be overwritten directly in the data (sectors) of the old. This is called Overwriting.

In the hard disk, overwrite this activity is unusual. Unfortunately, not for SSD. Overwriting activities will lead to "garbage data" or the English language is Garbage. Garbage is causing an SSD will slow down over time because the old data is still there so it makes SSDs have to sort out the old with the new data. This makes SSDs slow in reading data.

This is where the use of TRIM. TRIM sure when the operating system wants to write in the same sector, the old data will be erased completely without any garbage anymore. In addition, the TRIM function will also make all sectors of the deleted and formatted to be clean. This would make an SSD becomes tight as new.

2. The contents of the SSD

        An SSD does not contain the same complex as the mechanical hard disk. If you ever see a RAM (Random Access Memory, or computer memory), the contents of a SSD similar to it. As the picture at the top, SSD only consists of a set of memory installed on a board.

3. MLC and SLC

        Both names refer to the type of memory used SSD. SLC stands for Single Level Cell. As the name implies, this type of memory will store a data bit in a memory cell. Multi Level Cell or MLC, storing two bits of data in a memory cell. SLC has many advantages compared with the MLC. The first is speed. In addition, the SLC also has a longer life cycles than MLC. Unfortunately, the price of SLC type memory is more expensive than MLC, making it rare to find in the consumer SSD.

4. Speed

      SSDs have no moving mechanical advance in writing and reading data. Additionally, SSDs do not need to spin like a hard disk spindle. All done electrically. So automatic is faster than regular hard disk.

5. Safer

      There are some opinions that say that an SSD is more secure than the hard disk. The first reason is that an SSD has no mechanical in it to make it durable storage media. When crashed, the hard disk will be damaged and your data would be inaccessible.

In addition to durable, the SSD also vibration resistant. HDD is working when exposed to constant vibration will experience mechanical damage. This is not going to happen to the SSD. In addition, you will not find that random noise will be found in a HDD.

HDD tends to heat due to friction in mechanics, namely on its spindle rotation. Hard disks are hot can of course make the damage: it is time to say goodbye to your data.

6. Expensive

      SSDs tend to be the same as the expensive price. This is because the production of a flash memory is a cost that is more expensive. In addition, the technology is also relatively new. SSD is a new product that costs will drop over time.

Cheapest price of an SSD two years ago at a price of SSD with a capacity of 60 GB now. For an SSD with a capacity of 30 GB you have to spend only about $80. At the same price, you'd have to get a hard disk with a capacity of 2 TB. The comparison pretty far. However, you should see it from different sides.

After seeing the above points, it can be seen that the SSD is more secure. Imagine you are a frequent traveler with a laptop. While working on the car, suddenly there are holes that lead to your notebook fall. When it happens to a hard disk, it can make the hard disk is damaged. Not with the SSD. Data that is worth millions of dollars were safe by an event like this. In essence, the SSD is more durable, water, vibration, and heat.

Tips Caring for SSD:

1.  Not on RAID, especially for SSD TRIM has a feature, because with automatic RAID TRIM feature  will not work, and garbage will not be wasted so that SSD performance and the performance of SSD will slow down.

2.  Electricity should be nice, do not often die electric ampe.

3.  Do not run the defragment program because it will accelerate the age of SSD with read and write space.

4.  Do not put a replaceable file / are changed / updated each time because it will shorten the life of the SSD.

5.  Wherever possible use as a media SSD read, not write because the SSD is shortening the process of writing and storing data.

Top reviews SSD : http://solid-state-drive-review.toptenreviews.com/

sources: from different sources