Archived from groups: comp.sys.ibm.pc.hardware.storage (
More info?)
Previously Phil <phil@nospamjencom.co.uk> wrote:
> So which cards use ahrdware RAID?
What mainboard bus? PCI/PCI-X/PIC-64/PCI-E?
What disk bus? IDE/SATA/SCSI?
As far as I know, none of the Promise SATA/IDE RAID
cards are truely hardware RAID. For example an Adaptec
ATA RAID 2400A is. I think a HighPoint RocketRAID 454
is not.
It is actually non-tivial to tell.
Arno
> "Arno Wagner" <me@privacy.net> wrote in message
> news:2ri9kpF1b7f28U1@uni-berlin.de...
>> Previously Phil <phil@nospamjencom.co.uk> wrote:
>>> Hi
>>
>>> First of all, what is the difference between a RAID controller and a RAID
>>> card. Promise (www.promise.com) seem to have two product ranges of the
>>> above
>>> products.
>>
>> Theoretically a "RAID controller" could also mean a pice of software, but
>> nobody uses the term that way. It is the same in practice.
>>
>>> And also, what is the best RAID controller/card (not just promise) to go
>>> for, that won't slow the performace of my PC in any way, when 4 drives
>>> are
>>> connected to the controller?
>>
>> As almost alwways, there is no best. The only thing you can get
>> is a best fit for your needs, and that depends obviously on your
>> needs.
>>
>> All cards will slow the performance of your PC somewhat, if only
>> for slightly longer PCI arbirtation. Also there will be bandwidth
>> usage for the RAID in the PCI bus, which is not available for other
>> devices anyore, if it is a "software-RAID on a card". Many
>> cheaper cards are of this type and only have partial/no
>> hardware support for the RAID.
>>
>> Arno
>> --
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>> "The more corrupt the state, the more numerous the laws" - Tacitus
>>
>>
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