Re: scrub implies failing drive - smartctl blissfully unaware

[Phillip Susi <psusi@ubuntu.com>]

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On 11/20/2014 6:08 PM, Robert White wrote:
> Well you should have _actually_ trimmed your response down to not 
> pressing send.
> 
> _Many_ motherboards have complete RAID support at levels 0, 1, 10,
> and five 5. A few have RAID6.
> 
> Some of them even use the LSI chip-set.

Yes, there are some expensive server class motherboards out there with
integrated real raid chips.  Your average consumer class motherboards
are not those.  They contain intel, nvidia, sil, promise, and via
chipsets that are fake raid.

> Seriously... are you trolling this list with disinformation or
> just repeating tribal knowledge from fifteen year old copies of PC
> Magazine?

Please drop the penis measuring.

> Yea, some of the IDE motherboards and that only had RAID1 and RAID0
> (and indeed some of the add-on controllers) back in the IDE-only
> days were really lame just-forked-write devices with no integrity
> checks (hence "fake raid") but that's from like the 1990s; it's
> paleolithic age "wisdom" at this point.

Wrong again... fakeraid became popular with the advent of SATA since
it was easy to add a knob to the bios to switch it between AHCI and
RAID mode, and just change the pci device id.  These chipsets are
still quite common today and several of them do support raid5 and
raid10 ( well, really it's raid 0 + raid1, but that's a whole nother
can of worms ).  Recent intel chips also now have a caching mode for
having an SSD cache a larger HDD.  Intel has also done a lot of work
integrating support for their chipset into mdadm in the last year or
three.


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