One way that SSD controllers maximize the life of an SSD is to use feedback on the life of flash blocks to determine how wear has impacted them. Although this used to be very uncommon, it is now being incorporated into a number of controllers.
Here’s what this is all about: Everybody knows that endurance specifications tell how much life there is in a block, right? For SLC it is typically 100,000 erase/write cycles, and for MLC it can be as high as 10,000 cycles (for older processes) but goes down to 5,000 or even 3,000 for newer processes. TLC endurance can be in the hundreds of cycles. Now the question is: “What happens after that?”
In most cases individual bits start to Continue reading “How Controllers Maximize SSD Life – Feedback on Block Wear”
