Solid-state drive (SSD) is a type of device, with no moving parts, for non-volatile storage of digital data. They are typically built around a semiconductor integrated circuit, responsible for storage, differing from magnetic systems (such as HDDs and LTO tapes) or optical (disks such as CDs and DVDs). The devices use flash memory (technology similar to those used in memory cards and USB flash drives).
Flash memory and controller are two fundamental components that exist in the most common SSDs on the market. Unlike a hard drive, flash memory does not require moving parts or motors to operate. It is directly responsible for saving all files. By operating electrically, the SSD can make reading and writing faster.
The SSD basically has two divisions: the pages and the blocks. Pages are the smallest physical part of the SSD, while the blocks are a grouping of pages.
- Memory access time is much shorter than the access time to magnetic or optical media;
- Elimination of electromechanical moving parts, reducing vibrations, making them completely silent;
- Because they do not have moving parts, they are much stronger than ordinary hard drives against physical shocks, which are extremely important when it comes to laptops;
- Less weight compared to hard drives, even the most portable;
- Reduced energy consumption;
- Possibility of working at higher temperatures than ordinary HDDs – about 70° C;
- It performs readings and recordings faster, with up to 250 MB/s in the recording and up to 700 MB/s in the read.
- Higher cost;
- Lower storage capacity than IDE and SATA hard drives.
SSDs are more stable and robust, but are not immune to faults
In comparison to conventional HDDs, SSDs come out the front because, in addition to much higher performance, the models tend to be more robust. While a hard drive is subject to mechanical problems and irreversible damage from impact, there are not many elements that can cause an SSD to fail. SSDs also consider superior than Flash drives. They have less chances of repair than flash repair.
However, this does not mean that technology is not without its problems. Here are some of the most common errors with this type of media, understand their causes, or even find out if it’s time to retire the SSD to prevent data loss.
In case of data loss on SSDs, sometimes there needs professional SSD drive data recovery service.