Mailinglist Archive: opensuse (2348 mails)

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Re: [opensuse] Re: Software IDE RAID versus hardware IDE RAID
  • From: Neil <hok.krat@xxxxxxxxx>
  • Date: Fri, 4 Apr 2008 15:41:45 +0200
  • Message-id: <fb8374350804040641n2224c979x5dca5781566807e2@xxxxxxxxxxxxxx>
On Thu, Apr 3, 2008 at 7:57 PM, John Andersen <jsamyth@xxxxxxxxx> wrote:
On Thu, Apr 3, 2008 at 10:26 AM, Sandy Drobic
<suse-linux-e@xxxxxxxxxxxxxxxxxxxxxxx> wrote:

> Normally, a server with a hardware raidcontroller and hotplug enclosure is
> SAF-TE aware, each hdd slot has an activity and a failure led, so the raid
> controller that monitors the disks will activate the failure led if the
> drive does not work correctly.

Not being a big believer in raid controllers (for smaller sized shops any
just having a hot spare in your array will indicate the problem.

Most drives these days do have an onboard led for drive activity.
After a failure
and an automatic rebuild onto the hot spare the one not flickering with
any system activity is the dead one. (and also the cold one if no lights
are present).

Any disk cabinet which would allow a hot drive change will also have repeater
lights where you can see them.

Even small shops with single servers running raid 1 can afford a third disk.


Question: I hear everyone speaking about the hotpugability of (good)
hard raid controllers, but is it possible to hot plug a new SATA drive
into a soft raid system? Are there motherboards that do not support
hot plugging of SATA drives? For IDE it is probably impossible (IDE
was not designed for it I belive) unless the hardware RAID controller
would have special possibilities for it, I believe.
Thanks for taking the time to think about it


There are two kinds of people:
1. People who start their arrays with 1.
1. People who start their arrays with 0.
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