HAW-E server running version 2017-R2 Rev.A (the first release of 2017-R2) may* occur kernel memory leak and accidentally stops working at the final stage.
(* The kernel memory leak is NOT happening with every HAW-E 2017-R2 Rev.A. Its possibility is inconsistent depending on various factors/situations)
Wrong memory management code in the RAID status management module of HAW-E version 2017-R2 Rev.A.
Please apply this hotfix HE002206014 to fix the kernel memory leak problem.
[Note] A version name of your HAW-EIBU after installing this hotfix is "2017-R2 Rev.C".