[Customer level]Technical Announcement on High Failure Rate of WD Paris-C (WUH7218xxALE6L4) 16TB & 18TB Hard Drives

2026-02-06 15:24:33 Published

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Product Model

Announcement category	Early warning
Operational requirements	Version upgrade

I. Product Model

The relevant codes are shown in the table below:

WUH721816ALE6L4		WUH721818ALE6L4
0231AG05	0231AHAS	0231AJP9	0231AJDV
0231AFQT	0231AHFU	0231AHHQ	0231AFSG
0231AGQY	0231AFU6	0231AGX7	0231AJW7
0231AG3R	0231AJ3Y	0231AJP8	0231AJHR
0231AFR3	0231ASL9	0231AKMJ	0231AJHQ
0231AFQW	0231ASDM	0231AGXV	0231ALT7
0231AJBY	0231AKJ6	0231ANJY	0231AL80
0231AK1K	0231AF3G	0231ANK0	0231AJQW
0231AP58	0231ASKG	0231AK5F	0231AJQJ
0231AGY6	0231AH3W	0231AK5G	0231AL7P
0231AJXU	0231ANJX	0231AGHF	0231AKAF
0231AFYN	0231ANK3	0231AGHE	0231AKAA
0231AJ5T	0231AGWY	0231AJT8	0231AJRE
0231AG7R	0231AJ89	0231AGHG	0231AJR9
0231AJ5Q	0231AH3Y	0231AJSR	0231AJ3T
0231AF9R	0231AT9U	0231AKNK	0231ASK0
0231AGQP	0231AEH6	0231ALR3	0231ASF4
0231ALDS	0231ARJT	0231AM04	0231ASJX
0231ANG0	0231ARJX	0231ALWN	0231AGQ7
0231ANFU	0231AND6	0231AMR2	0231AGQG
0231AEHA	0231AQVK	0231APXC	0231AK5T
0231AEH7	0231AFU5	0231AMHU	0231AJHL
0231AF90	0231AFU4	0231AJKG	0231AFYF
0231AF2F	0231AJW0	0231AJNG	0231AFSN
0231AFYQ	0231AH8S
0231AG7N	0231AR5S
0231AJJN	0231AL7P
0231AJNH	0231AHTM
0231AKNJ	0231AJVT
0231AQ53	0231AFU7
0231ALQB	0231ALWL
0231AM0D	0231AFWD

Involved Version

All firmware versions before PCGAW8C2.

Problem Description

WD Paris-C (WUH7218xxALE6L4) series 16T & 18T hard drives exhibit performance degradation or unexpected hard drive drops after prolonged use, leading to an increased failure rate.

Cause Analysis

There is an issue with the old version of the firmware. Currently, the latest firmware for the hard drive, PCGAW8C2, has been optimized to address this problem.

Workaround/Solutions

1. Replace hard drives that have already reported a failure.