What is an SSD ?
SSD ,also called solid state drive or solid state disk , is a type of storage device used in computers.
Before SSD technology emerges, HDD is the main storage device . HDD is a traditional hard drive consists of a spinning disk with a read/write head on a mechanical arm called an Hard Disk. An HDD reads and writes data magnetically. The magnetic properties, however, can lead to mechanical breakdowns.
While SSD is a non-volatile storage media that stores constant data on solid-state Nand Flash chips. Now SSDs are replacing traditional HDD in computers as storage device. Because SSDs are much faster in comparision .With an SSD, the device ‘s OS will boot up more quickly ,Programs will load quicker and files can be saved faster.
Since an SSD has no moving parts to break or spin up or down. The two key components in an SSD are the flash controller and NAND Flash memory . This configuration is optimized to deliver higher read/write performance for sequential and random data requests. Also, the data is stored in the flash memory safely and the SSD delivers higher reliability than traditional HDD.
What do SLC, MLC, TLC mean in SSDs?
From its appearance,there a various interfaces and sizes of SSDs such as mSATA or PCIe. 2.5” SATA, 2.5” PATA/IDE and M.2 SATA SSD To attach an SSD to your system or motherboard, you need to connect it using a specific type of connection interface. Here’s what you need to know about the most common SSD interfaces.
PCIe and NVMe SSDs: PCI Express (PCIe) is normally used to connect graphics cards, network cards, or other high-performance hardware. This interface gives you high bandwidth and low latency, making it ideal when you need super fast communication between an SSD and your CPU/RAM. SSDs that use the PCIe connection type are based on the Nonvolatile Memory Express standard (NVMe), which boasts up to 32 Gbps of raw throughput and runs at up to 7 Gbps.
SLC vs. MLC vs TLC
If you are exploring your options for industrial flash storage, two contenders are likely to be on your list: SLC NAND and MLC NAND. Both forms of NAND flash storage are popular and reliable, and each one has its most appropriate uses. The trick is not using MLC NAND when you really need SLC, or paying for SLC when you could get by with MLC. Which NAND flash storage technology is right for your application? This comparison of SLC NAND vs. MLC NAND will help you make up your mind.
With SLC NAND, one bit of data is stored on each cell. This kind of storage is extremely important for devices in which critical data will be saved.It provides suitable reliability and greatly minimizes the risk of data loss and corruption.
With MLC Nand,MLC stands for multi-level cell with two bits of data are stored per cell.You will find it most often in commercial and industrial applications. MLC NAND is the right solution for these products because it costs less than SLC NAND.
With TLC Nand, a triple-level cell NAND flash, stores three bits of data per cell.It is ideal for consumer grade products because the price point of TLC flash is the lowest of these three forms.
And ,SSDs are available in different kinds of storage capacity ,starting from 16GB to 30TB in the marekt.The most common size is 512GB,1TB,2TB,which is suitable for mass data storage for your choice.