[K12OSN] Hard Drive Upgrade Quandry

[Burke Almquist]

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Aren't most promise IDE (controllers, not RAID) supported by the kernel 
now?
I think even some of the fasttrack one's are in the stock kernel now.
I have a Promise IDE controller doing software RAID 1 and it seems to 
work fine.

On Nov 26, 2004, at 1:12 PM, Jim McQuillan wrote:

> Have you looked at the 3ware ide raid controllers?
>
> I've used them, and they are awesome.  Fully supported by the Linux
> kernel since way back in the 2.2.x days.
>
> As for Promise controllers, i've never heard anybody say anything good
> about them.  The little bit of playing that I did with a Promise card
> was not a good experience.  It wasn't a raid card, just a normal IDE
> controller, but it seemed to be a pain in the butt to set up.
>
> Jim McQuillan
> jam at Ltsp.org
>
>
>
> On Fri, 26 Nov 2004, Calvin Dodge wrote:
>
>> Liam Marshall wrote:
>>>
>>> I would like to get a Promise IDE raid controller, either the 4 or 6
>>
>> Make sure it's compatible with a stock Linux kernel.  Typically, the
>> low-priced RAID controllers are software-based (the driver hides this 
>> fact
>> from the operating system), and sometimes the drivers are provided in
>> binary-only format (like the Promise controller at one customer's 
>> location,
>> which provided modules only for kernels from RH 7.2).  You're really 
>> best off
>> with a card with open-source drivers (like 3Ware, though I suspect 
>> that's out
>> of your price range).
>>
>>> channel version, haven't decided yet.  I was going to put on it 4 - 
>>> 80 GB
>>> EIDE hard drives with 7200 rpm and 8MB cache each.  I would use 
>>> these in a
>>> raid 0+1 or raid 1+0 configuration.  It is my understanding that 
>>> this will
>>> give me the best of both mirroring for redundancy, and 
>>> parity/spanning for
>>> performance.
>>
>> Yes, although 2 80 gig drives cost quite a bit more than 1 160 gig 
>> drive.
>>
>>> If I am right in my understanding of raid levels 4 - 80GB drives in 
>>> such a
>>> configuration will give me 160GB of storage space, with the other 
>>> 160GB of
>>> the drives being used in a mirrored capacity right?
>>
>> Yes.
>>
>> Calvin
>> --
>> Calvin Dodge
>> Certified Linux Bigot (tm)
>> http://www.caldodge.fpcc.net
>>
>>
>
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