Rafael Ferreira wrote:
Hi there,
Can I ask why use a hardware controller instead of a MD device? MD
devices are tons more capable and you wouldn't have problems with
drivers. Also, from my experience, performance differences between
hardware and software RAID are so small (unless you are in a CPU limited
embedded environment) that are only noticeable in synthetic benchmarks
and will never be noticeable in real life scenarios.
I am using md devices aka software raid to work around the driver
issues currently, but CPU usage is pressured and the perception is
that performance is not what it was when the hardware RAID controller
was in place. We have jobs that run over multiple days over large
datasets.
If I can't determine a drop in replacement that works with minimal
hassles the work around will become the permanent resolution. We are
transitioning a portion of the data to a SAN, that may reduce the
pressure to resolve this.
Thanks for your feedback,
Brent.
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