[ltp] raid1 on thinkpad A31

[Jon]

> On Tue, Feb 17, 2004 at 01:21:19PM -0500, Reed Gregory wrote:
>> On Tuesday 17 February 2004 12:57 pm, Jon wrote:
>> > Are you sure they're on different controllers? I think that just
>> > means they are on different channels. Two channels on the same
>> > controller.
>>
>> You are correct.  They are different channels.  But I assume that is
>> what the OP was talking about in the first place.  For better
>> performance of Raid you would want to use different ide channels.  They
>> is only one controller on the laptop.
>
> Now I am confused a bit here....
>
> So on a regular old PC you have 2 different IDE controllers that can have
> 4 IDE devices.  We have 2 channels on each controller for a PC right?
>
> On our Thinkpads, we have only 1 IDE controller that has 4 channels?
> This can have 4 IDE devices as well?


A regular PC has one controller, which has two channels. Each channel can
have two drives on it. That makes 4 drives in total.

hda/hdb are master/slave on the first channel.
hdc/hdd are master/slave on the second channel.

And since ThinkPads are regular PCs, they are the same :)


Jon.