8TB Extreme SSD San Disk ordered from San Disk not being recognized or acting weird

While recovering from a crash of another manufacturer I thought it would be useful to have an 8TB San Disk Extreme drive which I purchased directly from San Disk. Instead, I am having problems with the 8TB San Disk SSD not being recognized or not able to have it recognized when another drive is in in the other port. Weird behavior.

Other SSDs are working fine, including 4 other 4TB San Disks. I did some troubleshooting and rebooted the computer, however, I have other things to do, and investigating bad drives isn’t my hobby.

I am posting this because when I Googled to look into the problems, I found out that failing SSD drives is a problem and by posting this, I might alert some other person having a problem with an SSD Sandisk drive. I am not looking for advice to save the SSD drive or fix it.

I am scrapping the 8TB drive and I will be looking into replacing all four of the 4TB Sandisk SSD drives over the next few weeks.

Download the official SanDisk tool to update your SSD firmware, and connect the device using a high-quality USB-C cable.

It does sound like a flaky 8TB unit. Before scrapping it, you could quickly test it solo on another USB port/hub, update firmware, or check it via Disk Utility/CHKDSK just to confirm it’s not a power or enclosure issue. Large-cap SSDs are more prone to controller faults, so replacing them makes sense.
By the way, there are many solutions that can fix an SSD not showing up. Check this guide if others need help.

This issue could be caused by several factors, such as data port limitations or firmware incompatibilities with the specific SSD model. Have you checked for firmware updates or reviewed the system’s power supply and port compatibility?

Is your USB flash drive not showing up in Disk Management? If so, try the following steps:

  1. Enter the BIOS and ensure the drive is enabled so it becomes visible to your computer.

  2. Disable the USB selective suspend setting in the Control Panel.

Read also: How to Fix USB Flash Drives not Showing up in Windows

I bought an 8TB SanDisk Extreme SSD directly from SanDisk, but it wouldn’t be recognized when another drive was connected, even though other SSDs, including four 4TB SanDisk drives, worked fine. After some basic troubleshooting, I decided not to try fixing it. I’m sharing this to alert others who might run into the same problem. I have scrapped the 8TB drive and will be replacing all four 4TB SanDisk SSDs in the next few weeks.

Have you checked our knowledge base articles?
( Get Support for Your SSDs and Flash Products | Sandisk )

Try this one.