Consumer grade products:
Something at the high end that does a good job of ensuring basic data reliability and maximizing performance. At the NAND level, there is ECC error correction, dynamic Raid 5 between Die, and also some OP space set aside for replacing bad blocks. In addition, with these high-end SSDs, there will be some capacity of DRAM for caching of 4K writes; the maximum performance is high, but there will be some degree of dropout on sequential writes.
Consumer grade products, some at the lower end, do work, data reliability is poorer and even worse, there is a lower probability of data corruption or loss (this kind of data loss is basically a substandard product), there is no or almost no OP space, and bad blocks can only be shielded when they appear; performance is poorer, and serious speed drops will occur after some data is written continuously.
Enterprise SSDs:
Some high-end ones, to do as well as possible, with higher performance and more stability.
Performance, because the data is written directly into the MCL or TLC area of the NAND, not through the analogue SLC area, there is basically no dropout (unless continuous writing + high ambient temperatures lead to high disk temperatures, triggering high-temperature threshold protection and turning down the performance to ensure stability). 4K random performance is higher than consumer-grade, with the current PCIe 4.0 enterprise SATA SSD PBlaze6 6530, for example, can reach 1.1 million IOPS for 4K random reads, while the performance-grade PBlaze6 6920 can reach 1.6 million IOPS and over 400,000 IOPS for 4K random writes, which can be considered very strong.
Data reliability is high, with data protection mechanisms in the controller, DRAM, BRAM, NAND controller, and more, reducing the occurrence of silent errors and automatically correcting detected errors. High-end enterprise SSDs also support end-to-end data protection with different Sector Size (Variable Sector Size, VSS), DIX and DIF, and different PI Types such as 1, 2, and 3, further safeguarding data accuracy, not only on-disk but also off-disk to ensure that data is as error-free as possible. Or back to the PBlaze 6 6530, which supports all of the above.
High lifespan, although the enterprise NAND particles are also already TLC, their maximum PE count is far beyond that of consumer products, up to 10,000 times (consumer TLC 3000 times is tops). Its DRAM and OP space can be used to write amplified buffers, which reduces the actual erasure of the NAND and further ensures longevity. In addition, data accuracy is guaranteed and early NAND hang-ups can be avoided.
The large amount of OP space set aside is extremely helpful, whether it is for Block replacement, buffering for write amplification, or simulating the creation of SLC.
Finally, there are the more feature-rich enterprise SSDs, such as log management, remote maintenance, secure firmware upgrades, secure erase, power consumption configuration, power failure data protection, and more.
