Help, my disk array has one dead member

[Liam Proven]

On 26 March 2017 at 15:13, Peter Silva <peter at bsqt.homeip.net> wrote:
> While the advice is good... Blaming MS licensing isn't justified.  The
> reason firmware raid exists is because, long ago, cpus were not powerful
> enough to take this load on in addition to other tasks, so you needed
> processors that sat on adaptor cards to handle the load.  These days, there
> is plenty of cpu, so it no longer makes any sense.

No. You are confusing hardware RAID with firmware RAID.

Firmware RAID does the work in the device driver, with some help from
the BIOS. In other words, the CPU is doing the work anyway.

> These days, "hardware RAID" is just someone else's Linux box running
> software RAID (ok, NETAPPS are Solaris'y).  There may be a few ASICS in
> there, but by and large, it's software.

Not so. I am guessing you don't work with servers much. Hardware RAID
is still very common, but it's not cheap. The controllers cost as much
as a cheap PC and talk to SAS drives, not SATA.






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