HP Storage C- Accelerators ESXi/ESX Flashback substitution events

Lifetime data volumes:

Physical bytes written: 6,423,563,326,064

Physical bytes read : 5,509,006,756,312

Flashback substitution events

The IO Accelerator is equipped with Flashback substitution capability. This capability allows for predictive NAND flash failures to occur and keep the IO Accelerator functioning by substituting out bad locations or even a whole NAND chip. The output of the fio-status–acommand will show if any flashback substitution events have occurred.

The following is an example of the output after entering the fio-status–acommand. The numbers represent the bank (0-3) and chip number that was substituted.

First flashback event -> No action to take as infant mortality condition on NAND chip was caught per design.

Second flashback event –> Run fio-bugreport. Return the card (if under warranty) when you see two or more flashback substitution events.

• Flashback active on (bank a/chip m) and (bank b/chip n) (multi-bank failure)

•Flashback active on (bank a/chip m) and (bank b/chip m) (chip failure)

On the second flashback event, include the output from running the fio-bugreportcommand when you return the card.

Monitoring IO Accelerator health 40