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CONTAP-169966: AFF A400, FAS8300 and FAS8700: System disruption due to boot device read/write errors

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Issue

In some cases, AFF A400, FAS8300 or FAS8700 systems reboots unexpectedly because of excessive read or write errors with the boot device. The errors are not particular to any ONTAP or BIOS/LOADER version and can occur at any time.
The following system console messages are examples of this issue:
g_vfs_done(): rootfs.uzip read error - suspect boot device in process g_up on release
thread (swi4: clock (0)) on cpu 0 hung for 4001 milliseconds in process swi4: clock (0) on release xxx (C) on ...
They are followed by these messages when the system boots:
ERROR: ATA device failure
Version 2.20.1276. Copyright (C) 2021 American Megatrends, Inc.
BIOS Date: 01/19/2021 15:40:12 Ver: 16.3
Press <DEL> or <ESC> to enter setup.
Press <F7> to enter Boot Menu.
Ready to boot.
ERROR: [D9] Boot option loading failed

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