Enterprise SATA SSD needs to be able to handle enterprise-level workloads, operate continuously for 24 hours, and be capable of processing data for years on end. Additionally, they must have four main attributes: speed, durability, data integrity, and system-construction-program friendly relationship. Moreover, their read and write I/O commands must respond in milliseconds, process the I/O command first, and then transmit the data.
Understanding the enterprise SATA SSD for data security reliability
Data reliability is high, and there are data protection mechanisms in place for controllers, DRAM, BRAM, NAND controllers, and other links to reduce the occurrence of silent errors and automatically correct detected errors. High-end enterprise SATA SSD also supports end-to-end data protection, supports different sector sizes (variable sector size, VSS), supports DIX, DIF, and supports different PI types, such as 1, 2, 3, to further ensure data accuracy. Not only inside the disk, but also outside the disk, data can be protected from errors as much as possible.
The lifespan is high. Although enterprise-class NAND particles are also TLCs, their maximum PE times are far beyond those of consumer products and can reach up to 10,000 times. The DRAM and OP space can both be used as write amplification buffers, reducing actual erasure of the NAND and further ensuring lifespan. In addition, the accuracy of data is ensured, which can also prevent NAND from failing prematurely. A large amount of OP space is reserved, which is extremely helpful for block replacement, write amplification buffer creation, and simulated SLC creation.
Fault tolerance of the Enterprise SATA SSD
Enterprise SATA SSD uses redundant data recovery technology to handle failures in multiple dies in the flash memory without affecting data integrity and business operations. The uncorrectable bit error rate (UBER) is usually one to two orders of magnitude lower than in consumer-grade SSDs.
Enterprise SATA SSD can also provide end-to-end data protection. From the host end, data is transmitted via the PCIe link to the SSD controller, which transfers the data to the flash interface and then writes the data to the flash chip. At each segment of the transmission path, error-correcting/detecting algorithms ensure that data is transmitted correctly, reducing the risk of silent errors.
