Due to a NAND "channel hang" condition, the Intel SSD D3-S4510 and Intel SSD D3-S4610 series drives with 1.92TB and 3.84TB capacities may become unresponsive after around 1,700 hours of cumulative idle power-on time.

If you are using the SSDs stated above, your Synology NAS may have any of the following symptoms:

• Unexpected abortion of command sent from the Synology NAS to the SSD
• I/O errors on the physical drives
• Limited system performance for the workloads

Resolution

According to Intel, the NAND "channel hang" issue is currently addressed in the Maintenance Release 1 (MR1) of Intel firmware (version XCV10110). Synology has verified the compatibility between the Intel firmware XCV10110 and Synology NAS.

If you have created volumes using the mentioned SSDs, please back up your data to prevent data loss.

If you have set up an SSD cache using the mentioned SSDs, we recommend you remove the SSDs from the SSD cache. Your data will be synchronized back to the volume. For more information on how to manage SSD cache, please refer to this article.