"Norbert P. Copones" <[EMAIL PROTECTED]> writes:
> On Fri, February 9, 2007 4:11 pm, Ariz Jacinto wrote:
>> On 2/8/07, Norbert P. Copones <[EMAIL PROTECTED]> wrote:
>>> and speaking of adaptec? its all about their
>>> documentation not that Fake RAID thing. so i can't see any connection
>>> b/w the FakeRAID and adaptec.
>>
>> there are some SATA RAID controllers ( / models) under Adaptec
>> that are running a hardware RAID functionality thru emulation
>> via proprietary drivers in order to achieve low price points.
>>
>> you can refer to this comprehensive list:
>> http://linuxmafia.com/faq/Hardware/sata.html
>>
>>
>> most of the time, FakeRAIDs are referred to as "low-end" SATA
>> RAID controller.
>
> still what's the connection of the song to fake raid? as openbsd's
> frustration is not on fake raids but on the adaptec's documentation.
> ami(4) has fake raids too but still openbsd supports it very well.
IN ESSENCE:
* *BSD Fake raid is equivalent to Linux software RAID
* Fake raid/software RAID =/= hardware RAID
* Having a generic driver means that you're duplicating:
a) functionality -- you have to essentially fake RAID at the
software level, even if the hardware *should* support it
b) effort -- the hardware should be handling RAID, and not the
software (at least that's the idea)
Also having no or poor documentation means that developers are forced to
go use that generic fake raid implementation. It'll work, sure, but
generally suboptimally (YMMV though)
--
JM Ibanez
Senior Software Engineer
Orange & Bronze Software Labs, Ltd. Co.
[EMAIL PROTECTED]
http://software.orangeandbronze.com/
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