PowerEdge: Bit LR nastavený na discích SSD NVMe vede k chybám integrity médií a dat

Shrnutí: U disků SSD Dell NVMe připojených k serveru PowerEdge s nastaveným bitem LR (Limited Retry) může docházet ke zvýšenému počtu selhání z důvodu zvýšené chybovosti médií a integrity dat.

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Příznaky

Pozorované problémy, když je bit LR (DWORD 12 bit 31) nastaven na 1.

Nastavení bitu LR na hodnotu 1 u disků SSD Dell NVMe může způsobit následující příznaky:

  • Jednotky hlásí neobvykle vysokou chybovost médií
  • Výrazné snížení výkonu disku
  • Přerušení nebo selhání softwarových aplikací závislých na úložišti

Příčina

Konfigurace bitové konfigurace LR v discích Dell NVMe SSD není v prostředích PowerEdge podporována.

Omezený bit opakování není určen pro použití na serverech PowerEdge. Přestože firmware PowerEdge umí nastavit tento bit, společnost Dell nepodporuje jeho použití na serverech PowerEdge. 

 

  • LR = 1 nutí disk SSD používat hodnoty TLER (Time-Limited Error Recovery), které omezují dobu zotavení po chybě a mohou zvýšit hlášení chyb média

Řešení

Společnost Dell Technologies nedoporučuje ručně měnit výchozí konfiguraci bitu LR (DWORD 12, bit 31), protože takové změny nejsou podporovány.

Dotčené produkty

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Vlastnosti článku
Číslo článku: 000415896
Typ článku: Solution
Poslední úprava: 16 led 2026
Verze:  1
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