solid state drive (SSD) capacity

SSD capacity is the maximum amount or data that can be stored on a solid state drive.

 According to JEDEC, SSD capacity should be defined as user-addressable capacity and not include non-volatile memory areas intended for the flash controller's use.   JEDEC recommends that SSD capacity be calculated using the following formulas:

Download this free guide

Download Now: Flash Memory vs. RAM: What’s the Difference?

In this guide, explore the differences between flash memory and RAM. Plus, discover how quad-level cell (QLC) and triple-level cell (TLC) NAND flash memory are coexisting in the data center.

Start Download

• Corporate E-mail Address:

  You forgot to provide an Email Address.

  This email address doesn’t appear to be valid.

  This email address is already registered. Please login.

  You have exceeded the maximum character limit.

  Please provide a Corporate E-mail Address.

• • I agree to TechTarget’s Terms of Use, Privacy Policy, and the transfer of my information to the United States for processing to provide me with relevant information as described in our Privacy Policy.

  Please check the box if you want to proceed.

• • I agree to my information being processed by TechTarget and its Partners to contact me via phone, email, or other means regarding information relevant to my professional interests. I may unsubscribe at any time.

  Please check the box if you want to proceed.

By submitting my Email address I confirm that I have read and accepted the Terms of Use and Declaration of Consent.

For a logical block size of 512 bytes:

User-addressable logical block count = 21168 + (1953504 x SSD Capacity in GBs); or

SSD Capacity in GBs = (User-addressable logical block count - 21168) / 1953504.

For a logical block size of 4096 bytes:

User-addressable logical block count = 2646 + (244188 x Capacity in GBs); or

Capacity in GBs= (User-addressable logical block count -2646) / 244188