Advantages of SSD | disadvantages of SSD
This page covers advantages and disadvantages of SSD. It mentions SSD advantages or benefits and SSD disadvantages or drawbacks. SSD stands for Solid State Drive.
What is SSD?
SSD stands for solid state drive or solid state disk. It uses IC assemblies as memories in order to store data persistently. They are manufactured in variety of lengths to suit variety of storage devices. They are used for various data storage applications including cloud storage at data centers.
The most common interfaces used are SATA (Serial Advanced Technology Attachment), SAS(Serial Attached SCSI) , FC (Fiber Channel) and PCI (Peripheral Component Interconnect). SATA interface supports 1 Gbps to 6 Gbps. PCI express and SATA interfaces are widely used in most of the SSDs.
The figure depicts Intel Optane SSD 900P released recently. It supports NVMe and PCIe protocols and hence offers higher performance including moderate capacity. Samsung offers 970 Pro and 970Evo SSDs for consumers.
Since 2017 most of the SSDs are using NAND based flash memory. NAND is non-volatile flash memory which retains data even after power is switched off. There are different types of NAND which include SLCs (Single Level Cells), MLCs (Multi Level Cells) and TLCs (Triple Level Cells). They have their respective merits for SSDs.
Benefits or advantages of SSD
Following are the benefits or advantages of SSD:
➨It is faster than HDD, as there are no mechanical parts in SSD. Random access time for SSD array is about 0.1 ms in comparison to HDD which has about 5 to 10 ms.
➨They are very easy to set up and offers low latency with high storage efficiency.
➨SSDs are suitable for high load projects with numerous reading and writing operations.
➨They make less noise and are smaller in size as they do not use any rotating elements.
➨SSDs are flash based and offer longevity, robustness, high temperature, operating range, shock and vibration tolerance and lower power consumption.
➨Fragmentation is not an issue; hence consistent performance as mentioned.
➨There is little to no risk of data loss. Moreover it is resistant to mobile users' expected bumps and drops.
Drawbacks or disadvantages of SSD
Following are the drawbacks or disadvantages of SSD:
➨It is more expensive compare to HDD (Hard Disk Drive). Its price increases with increase in storage capacity.
➨It has short life span in comparison to HDD (Hard Disk Drive).
➨They offer less storage space than traditional hard disk drives. Recent advances in the technology makes it possible to address this issue.
➨SSDs slow down as you fill them more i.e. near its storage capacity. Write performace will decrease.