Can USB cords fail only at higher speeds / saturation? (Troubleshooting .rar errors on HDD enclosure)

Windows 10 on a HP Desktop PC Pavilion P7-1003W (QN574AAR#ABA) Athlon II X4 650 (3.2GHz) 8GB DDR3 (2 x 4 GB)

I have a four-bay USB hard drive enclosure which has only had one hard drive in it. This works in concert with 2 internal HDD (I use cubesoft's Drive Pool to ensure duplicated copies exist of all files within a JBOD). Then about 2 weeks ago I added a new hard drive to it to bring the total up to two. Everything worked fine until the last 5 days when I noticed unzipping. rar files over 1 gigabyte gave a "corrupted rar" error.

The immediate suspect is the new hard drive I added to the enclosure. My hypothesis was strengthened by the fact that the errors went away when I removed the drive from the drive pool. However, when I run the same file operations with the new drive as a standalone disc inside the enclosure, it works no problem.

With the second drive in the enclosure, it is probably writing to both discs simultaneously and I wonder if doubling the amount of traffic on the USB cord could cause trouble if the cord is bad, even though it doesn't cause problems when using one drive at a time?

I'm also going to try the drive in a different slot in the enclosure, however I need to wait a few hours for the HDD diagnostics I'm running to finish. I'll also run a memtest, although given I can remove the problem by removing the drive makes me wonder about the issue being with the USB / HDD enclosure systems or possibly the drive.

Any other suggestions? Thanks!

BaldProphet,
BaldProphet avatar

Do you have problems transferring other large files, such as archives in different formats or large video files?

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