-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 El 2015-09-27 a las 17:44 +0200, Xen escribió:
On Sun, 27 Sep 2015, Carlos E. R. wrote:
Really sweet. Fake raid. But of course, that was my point, buster, but the card is hardware and it has a 'hardware BIOS' it's just that the RAID itself is not hardware. That's why I called it that, and you knew perfectly what I meant.
Well, you see, we call them fake raid because the processing runs in the CPU. The heavy work is done by the main CPU, /wasting/ cycles, that could be used for something else. In software. On a (real) hardware raid, the entire processing is done by its chipset, in hardware.
It is not simply "a driver" :-)
That is pretty much irrelevant. Software Linux RAID does the same and I don't think there is really a great performance penalty.
There is a large penalty compared with (real) hardware raid.
The issue is with these cards that (a) it requires a driver for the OS to even see the RAID as a RAID and (b) that it requires a driver to pretty much do anything.
What you need is not a driver, there is almost no such thing in Linux. You just need that the kernel guys implemented support for your particular brand of fake raid in the kernel. If it is there, chances are your /raid/ will just work out of the box. But then, I have always refused to use fake raid, so I would not know (nor care) about the details. The advantage, its use case, is that in double boot machines, the Windows side may already be using it, and thus, you need the Linux side to support it too. However, there is no posibility of Windows being able to use a Linux software raid. - -- Cheers Carlos E. R. (from 13.1 x86_64 "Bottle" (Minas Tirith)) -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (GNU/Linux) iF4EAREIAAYFAlYJN84ACgkQja8UbcUWM1xC4gD/ZMENhAicI2ebUtsA+ieQIpSz fbdTjd06Rhy7FcgTmsoBAKE5I3P5Z9og3Dii5t2NtkktyvKjDLdkJOA+J4vACbTo =4VyZ -----END PGP SIGNATURE-----