nvidia raid

Previously Rob Nicholson <rob.nicholson.DeleteThis@nospam_informed-direct.com> wrote:
>> Is it generic?
>>
>> If I set up a RAID 0 on a nForce 570 Ultra, could the RAID be
>> recognized by the nForce 590 chipset on another board?

> A very good question... unfortunately I don't know. I never personally trust
> RAID between different chipsets...

Linux has a software driver foir this type of fake-RAID, called dmraid.
It may document whether the on-disk format is the same. However since
both chipsets are really RAID capable and the RAID is done in software
there is a good chance this may work.

Arno
 >> Stay informed about: nvidia raid 

Arno Wagner wrote in news:5p8rb9Fpsgm2U2@mid.individual.net
> Previously Rob Nicholson <rob.nicholson.TakeThisOut@nospam_informed-direct.com> wrote:
> > > Is it generic?
> > >
> > > If I set up a RAID 0 on a nForce 570 Ultra, could the RAID be
> > > recognized by the nForce 590 chipset on another board?
>
> > A very good question... unfortunately I don't know. I never personally trust
> > RAID between different chipsets...
>
> Linux has a software driver foir this type of fake-RAID, called dmraid.
> It may document whether the on-disk format is the same.

> However since both chipsets are really RAID capable

Nothing to do with the chipset at all.
Any chipset is RAID capable, it's just a question of BIOS and drivers.

> and the RAID is done in software

Like there is any difference if it was to be hardware assisted raid, babblebot.

> there is a good chance this may work.

Because it's both nVidia and they are the original creators (no OEM).

>
> Arno
 >> Stay informed about: nvidia raid 

> Linux has a software driver foir this type of fake-RAID, called dmraid.

Why is it fake RAID?
 >> Stay informed about: nvidia raid 

Previously Rob Nicholson <rob.nicholson.RemoveThis@nospam_informed-direct.com> wrote:
>> Linux has a software driver foir this type of fake-RAID, called dmraid.

> Why is it fake RAID?

Because it is not hardware RAID, but pretends to be.

Arno
 >> Stay informed about: nvidia raid 

"Arno Wagner" <me RemoveThis @privacy.net> wrote in message news:5pbl6cFqgobcU2@mid.individual.net...
> Previously Rob Nicholson <rob.nicholson RemoveThis @nospam_informed-direct.com> wrote:
>>> Linux has a software driver foir this type of fake-RAID, called dmraid.
>
>> Why is it fake RAID?
>
> Because it is not hardware RAID, but pretends to be.
>
Are Lunix freaks really so stupid? It is software RAID, it does not pretend to be anything else.
 >> Stay informed about: nvidia raid 

Arno Wagner wrote in news:5pbl6cFqgobcU2@mid.individual.net
> Previously Rob Nicholson <rob.nicholson.RemoveThis@nospam_informed-direct.com> wrote:
> > > Linux has a software driver foir this type of fake-RAID, called dmraid.
>
> > Why is it fake RAID?

> Because it is not hardware RAID, but pretends to be.

Babblebot, utterly clueless as always.
Because it is not hardware RAID, it doesn't need to pretend to be.
It just is Raid, whether that's firmware or hardware assisted.

>
> Arno
 >> Stay informed about: nvidia raid 

On Tue, 6 Nov 2007 16:43:25 -0800, Eric Gisin <gisin.RemoveThis@uniserve.com> wrote:


>"Arno Wagner" <me.RemoveThis@privacy.net> wrote in message news:5pbl6cFqgobcU2@mid.individual.net...
>> Previously Rob Nicholson <rob.nicholson.RemoveThis@nospam_informed-direct.com> wrote:
>>>> Linux has a software driver foir this type of fake-RAID, called dmraid.
>>
>>> Why is it fake RAID?
>>
>> Because it is not hardware RAID, but pretends to be.
>>
>Are Lunix freaks really so stupid? It is software RAID, it does not pretend to be anything else.

It calls itself a raid controller. It pretends to be a hardware controller
no matter what assinine assertions you may blather.
 >> Stay informed about: nvidia raid 

Verily I say unto thee, that Eric Gisin spake thusly:
> "Arno Wagner" <me DeleteThis @privacy.net> wrote in message
> news:5pbl6cFqgobcU2@mid.individual.net...
>> Previously Rob Nicholson <rob.nicholson DeleteThis @nospam_informed-direct.com>
>> wrote:

>>>> Linux has a software driver foir this type of fake-RAID, called
>>>> dmraid.
>>
>>> Why is it fake RAID?
>>
>> Because it is not hardware RAID, but pretends to be.
>>
> Are Lunix freaks really so stupid? It is software RAID, it does not
> pretend to be anything else.

Ignorant twit.

Fake-RAID is an implementation along the lines of other half-assed
hardware solutions, like Winmodems. Some (but *not* all) of the
functionality that would otherwise be in hardware is shifted to the OS
via drivers, thus reducing the cost of that hardware by 0.00001 cents
per unit (presumably).

Purely hardware RAID requires no drivers (other than (S)ATA/SCSI), and
is thus OS agnostic.

Software RAID is something else yet again, and does not actually require
anything but two or more hard drives (no special controller), since as
the name suggests, it is implemented purely in software.

Linux Software RAID can be set up using a tool called mdadm.

Fake-RAID (i.e. Intel ICHx) can be set up using dmraid.

Hardware RAID (e.g. certain cards from 3Com) just works. It also tends
to be a quite expensive (and arguably better) solution.

--
K.
http://slated.org

..----
| "[Microsoft] are willing to lose money for years and years just to
| make sure that you don't make any money, either." - Bob Cringely.
| - http://blog.businessofsoftware.org/2007/07/cringely-the-un.html
`----

Fedora release 7 (Moonshine) on sky, running kernel 2.6.22.1-41.fc7
05:14:44 up 90 days, 5:09, 2 users, load average: 1.24, 1.01, 0.73
 >> Stay informed about: nvidia raid 

In comp.sys.ibm.pc.hardware.storage [H]omer <spam.RemoveThis@uce.gov> wrote:
> Verily I say unto thee, that Eric Gisin spake thusly:
>> "Arno Wagner" <me.RemoveThis@privacy.net> wrote in message
>> news:5pbl6cFqgobcU2@mid.individual.net...
>>> Previously Rob Nicholson <rob.nicholson.RemoveThis@nospam_informed-direct.com>
>>> wrote:

>>>>> Linux has a software driver foir this type of fake-RAID, called
>>>>> dmraid.
>>>
>>>> Why is it fake RAID?
>>>
>>> Because it is not hardware RAID, but pretends to be.
>>>
>> Are Lunix freaks really so stupid? It is software RAID, it does not
>> pretend to be anything else.

> Ignorant twit.

> Fake-RAID is an implementation along the lines of other half-assed
> hardware solutions, like Winmodems. Some (but *not* all) of the
> functionality that would otherwise be in hardware is shifted to the OS
> via drivers, thus reducing the cost of that hardware by 0.00001 cents
> per unit (presumably).

Actually it is quite more of a reduction. A hardware RAID controller
needs to be able to manage a RAID on its own. Thet means it needs
a CPU, its own (very small) embedded OS, and so on. If you check,
the cheapest RAID controllers are significantly more expensive than
Fake-RAID controllers.

> Purely hardware RAID requires no drivers (other than (S)ATA/SCSI), and
> is thus OS agnostic.

It does also need controller management software, but as soon as
the RAID is configured and as long as there are no problems, this
is exactly the point.

> Software RAID is something else yet again, and does not actually require
> anything but two or more hard drives (no special controller), since as
> the name suggests, it is implemented purely in software.

> Linux Software RAID can be set up using a tool called mdadm.

> Fake-RAID (i.e. Intel ICHx) can be set up using dmraid.

> Hardware RAID (e.g. certain cards from 3Com) just works. It also tends
> to be a quite expensive (and arguably better) solution.

Do you mean 3ware by chance? As to better: I prefere real software
RAID. Generally hardware agnostic (i.e. you do not need a spare
controller), more flexible (at least in linux you can to it on
partitions as well), good management tools (at least under Linux), no
problems getting SMART status from the disks, cheaper,
etc.. Disadvantages: May be slower, typically no automatic hotplugging
(but can be scripted), and typically does not work under another OS.

Arno
 >> Stay informed about: nvidia raid 

[H]omer wrote in news:ncu705-p5a.ln1@sky.matrix
> Verily I say unto thee, that Eric Gisin spake thusly:
> > "Arno Wagner" <me DeleteThis @privacy.net> wrote in message news:5pbl6cFqgobcU2@mid.individual.net...
> > > Previously Rob Nicholson <rob.nicholson DeleteThis @nospam_informed-direct.com>
> > > wrote:
>
> > > > > Linux has a software driver foir this type of fake-RAID, called
> > > > > dmraid.
> > >
> > > > Why is it fake RAID?
> > >
> > > Because it is not hardware RAID, but pretends to be.
> > >
> > Are Lunix freaks really so stupid? It is software RAID, it does not
> > pretend to be anything else.
>
> Ignorant twit.
>
> Fake-RAID is an implementation along the lines of other half-assed
> hardware solutions, like Winmodems. Some (but *not* all) of the
> functionality that would otherwise be in hardware is shifted to the OS
> via drivers, thus reducing the cost of that hardware by 0.00001 cents
> per unit (presumably).

> Purely hardware RAID requires no drivers (other than (S)ATA/SCSI),

Bwahahah.

> and is thus OS agnostic.

Bwahahah.

>
> Software RAID is something else yet again, and does not actually require
> anything but two or more hard drives (no special controller), since as
> the name suggests, it is implemented purely in software.
>
> Linux Software RAID can be set up using a tool called mdadm.
>
> Fake-RAID (i.e. Intel ICHx) can be set up using dmraid.
>
> Hardware RAID

> (e.g. certain cards from 3Com)

Bwahahah. Ignorant twit indeed.

> just works. It also tends to be a quite expensive (and arguably better) solution.
>
>
 >> Stay informed about: nvidia raid 

> Because it is not hardware RAID, but pretends to be.

Ohh, I always assumed it was hardware RAID as it's part of the chipset. Not
that I've ever trusted it. nVIDIA do some nice graphics cards but their
drivers have, well, gone through a lot of versions which hints at
instability/bugs I assume the same level for stability goes into their
RAID software drivers and whilst I can put up with an app crashing with bad
video drivers, I'm not going to trust my data.

Cheers, Rob.
 >> Stay informed about: nvidia raid 

> Are Lunix freaks really so stupid? It is software RAID, it does not
> pretend to be anything else.

Shirley it's a little more than software RAID otherwise you could use
Windows software RAID. Ohh, hang on - does Windows XP have software RAID? If
not, then I can half see the reason. I assume though that the nVIDIA chipset
has *some* vaguely RAID related functions in there.

Cheers, Rob.
 >> Stay informed about: nvidia raid 

"Rob Nicholson" <rob.nicholson.TakeThisOut@nospam_informed-direct.com> wrote in message
news:EvadnSMeG_6qbqzanZ2dneKdnZydnZ2d@bt.com...
>> Are Lunix freaks really so stupid? It is software RAID, it does not pretend to be anything else.
>
> Shirley it's a little more than software RAID otherwise you could use Windows software RAID. Ohh,
> hang on - does Windows XP have software RAID? If not, then I can half see the reason. I assume
> though that the nVIDIA chipset has *some* vaguely RAID related functions in there.
>
There are no RAID features in Intel ICH*R implementation.
There is a enable bit for AHCI and RAID,
plus the device type (IDE, AHCI, or SCSI/RAID) in PCI config space.
The Intel drivers check the device type and don't install if IDE.

It's purely firmware+software RAID, and I suspect nvidia is the same.
 >> Stay informed about: nvidia raid