SSD Health?

[Areyn13]

I've had my MX300 525gb from Crucial for 4 years now and is showing "Good" health but with a percentage of 21%. The total host writes is at 276tb with close to 35,000 power on hours. Should i start thinking about looking into a replacement anytime soon? I don't have any crucial data on it that needs backing up, so if it dies suddenly then it's not the biggest deal but still. 

[AndreiArgeanu]

It's not a bad idea to look into getting a new ssd. You should order a new ssd once your current one starts failing  SMART tests and you get errors at start up. JayzTwoCents made a video on this that might be worth taking a look at.

 

[Levent]

I would start looking at replacements. As apparently those drives are rated to last around 160TBW for 500G model.

[NewMaxx]

Has it started rotating out bad blocks? Check this in SMART. Most drives will start doing that at around 2/3 their lifespan, but it's a good point to replace the drive to avoid any performance or data retention issues.

 

That being said, the controller and flash combo in the MX300, along with increased over-provisioning, means you can do an awful lot of writes to the drive. The flash is officially listed at 1500 P/E (LDPC) which is still 3x your current write total (mind you, we must account for write amplification - may also be able to calculate this via SMART) but I've seen it tested far higher than that even.

[Areyn13]

16 hours ago, NewMaxx said:

Has it started rotating out bad blocks?

Is that the "Average Block-Erase Count" ?

[NewMaxx]

Average block-erase count is roughly the program/erase (P/E) cycle count. No, there may be a value for spare blocks, usually starts at 64 (100% in decimal), but sometimes it counts failed/bad blocks etc as well.