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  3. February 2021

Re: Disk Status confusion

Hello Larry,

Am 16.02.2021 um 14:04 schrieb Larry DrFranken Bolhuis <midrange@xxxxxxxxxxxx>:

Given batteries exist if you are still reading this, then when they croak (SRC xxxx8008) IBM i will simply stop using cache. Any data IN cache is flushed to disk. The system slows down significantly especially on writes.

Thanks for confirming my guess about "only write cache is affected".

To force that to YES you work with resources containing cache batteries and forces the card to flush the cache.

Some curiosity-thoughts:

How comes that a disabled cache needs flushing anyway?

How comes that a hosed ASP can be "lost" (whatever that means)? Pulling the mains plug in the middle of heavy writes to an ASP on a "normal", non RAID machine triggers yields an extended IPL time and probably access path recovery. Of course, data can be lost, but the whole ASP?

I'd love to hear your thoughts about that.

:wq! PoC


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