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E-Series write back caching forcibly disabled alert on EF300 and EF600 platforms

Last Updated:

Applies to

  • NetApp E-Series
  • Platforms: EF300 and EF600


  • Write back caching forcibly disabled alert reported in SANtricity System Manager and recovery-guru-procedures file in AutoSupport or Support Bundle.
  • Controller exception log (excLogShow) found in state-capture-data file shows the following PCI exception with a recovered NTB (Non-Transparent PCIe Bridging) link:
    • No controller reboot is expected from this exception

PCI SERR Exception
SERR Summary: 0x00000010
SERR Return Status: 0x00000000
SERR Collection Count: 0x2
   CB3 DMA/XOR  (Unit 4)
                VID 0x8086 DID 0x2021 B0:D4:F4
                PCI Status = 0x2010
                SERR Summary Flags = 0x80000011
   PCI-E Root to PLX9797-0  (Unit 0)
                VID 0x8086 DID 0x2030 B22:D0:F0
                PCI Status = 0x4010
                PCI-E Device Status = 0x0004
                PCI-E AER Uncorrectable Status = 0x00004000
                  Header Log 0 = 0x00000000
                  Header Log 1 = 0x00000000
                  Header Log 2 = 0x00000000
                  Header Log 3 = 0x00000000
                PCI-E AER Root Error Status = 0x00000054
                PCI-E XP Global Status = 0x00000001
                SERR Summary Flags = 0x80000090
NOTE: Recovered from NTB Link-Down Errors



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