[K12OSN] Hard Drive Upgrade Quandry

["Terrell Prudé, Jr."]

He's talking about in actual RAID mode, though.  In that mode, I know 
for sure that the answer is, sadly, no.  For that reason, I now refuse 
to buy anything that uses Promise's controller chips.

--TP

Burke Almquist wrote:

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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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