lkml.org 
[lkml]   [2002]   [May]   [2]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: IDE hotplug support?
Uz.ytkownik Pavel Machek napisa?:
> Hi!
>
>
>>I came across a nice case from procase, supporting 16 IDE drives in
>>(so-called?) hotplug frames. Problem is... How will linux trat this?
>
>
> Should be okay. Hdparm can force spindown and bus rescan, and that's
> basically what you need.
>
>
>>I plan to use 15 drives in a RAID-5, assigning the last 16th drive as a
>>spare.
>
>
> 8 controllers? hmmm...

15 drives == 16 interfaces == 8 channels == 4 controllers
with primary and secondary channel.

He will have groups of about 4 drives on each channel wich
serialize each other due to excessive IRQ line sharing and
master slave issues.

8 x 130MBy/s >>>> PCI bus throughput... I would rather recommend
a classical RAID controller card for this kind of
setup.

The request aliasing effects will be almost for sure disasterous
to overall system performance.

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:22    [W:0.113 / U:0.224 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site