Enlarge (credit: SanDisk/Amazon)

On Thursday, two more lawsuits were filed against Western Digital over its SanDisk Extreme series and My Passport portable SSDs. That brings the number of class-action complaints filed against Western Digital to three in two days.

In May, Ars Technica reported about customer complaints that claimed SanDisk Extreme SSDs were abruptly wiping data and becoming unmountable. Ars senior editor Lee Hutchinson also experienced this problem with two Extreme SSDs. Western Digital, which owns SanDisk, released a firmware update in late May, saying that currently shipping products weren’t impacted. But the company didn’t mention customer complaints of lost data, only that drives could “unexpectedly disconnect from a computer.”

Further, last week The Verge claimed a replacement drive it received after the firmware update still wiped its data and became unreadable, and there are some complaints on Reddit pointing to recent problems with Extreme drives.