Re: [Ltsp-discuss] Feasibility, conventional networking VS diskless networking

[Stephen Liu]

Hi Bruce,

Thanks for your response.

At 11:58 AM 11/21/2002 -0500, Bruce wrote:

Use a hardware raid card. (ide) (mirror)
Hardware is safe than the software type.

Now what you might want to do to increase speed is have one raid that you
boot from.
And another raid that that data is on.

Do you suggest using hardware RAID 0+1? I expect to be enlightened on hard disks connection to a PCI RAID controller.which only has 2 IDE slots. Shall I connect it in following way

RAID controller card
IDE slot 1 :- Master as stripping (RAID 1) for speed
Slave for mirroring (RAID 0)

IDE slot 2 : - Master as stripping (RAID1) for speed.
Slave for mirroring (RAID 0)

OR can I make the connection in following way applying the IDE slots of motherboard.

RAID controller card
IDE slot 1 :- Master as stripping (RAID 1) for speed

IDE slot 2 : - Master as stripping (RAID1) for speed.

Motherboard
Primary IDE :- Master for mirroring (RAID 0)
Slave for CDWriter

Secondary IDE :- Master for mirroring (RAID 0)
Slave for CDRom

So that each hard disk has its own channel.

First this type of backup/raid for me has proven to be excellent.
Second, what backup? its in real time and you don't have to schedule or
worry about power outages or waiting for the tapes to do their thing. You
don't have to replace tapes. Tapes will have errors on them then you have to
figure out how to rewrite the files. To get this information you have to
wait 2x as long cause it has to go back and compare the data on the disks.
This means that also more wear on the hard drives.
- snip -

Real time backup is very convenient. However

1) If one of the hard disk for stripping (RAID 1) is down, can the defected disk be replaced with its mirror disk immediately without reconfiguration/setup other than only changing connection. In such a case a new hard disk will be replaced as mirror. Will all data be automatically copied back to the new mirror disk when the PC restarts?

2) There is nothing 100% safe. If an additional backup device is required which one will be preferable, tape or CD?

Thanks in advance.

Stephen Liu

----- Original Message -----
From: "root" <[EMAIL PROTECTED]>
To: "John McCreesh" <[EMAIL PROTECTED]>
Cc: <[EMAIL PROTECTED]>
Sent: Wednesday, November 20, 2002 4:25 PM
Subject: Re: [Ltsp-discuss] Feasibility, conventional networking VS diskless
networking


On Wed, 2002-11-20 at 19:31, John McCreesh wrote:
> Have a look at http://uk.homelinux.org/docs/scintro.pdf
>
> Might give you some ammunition - John
>
> On Wed, 20 Nov 2002 16:34:00 +0800
> Stephen Liu <[EMAIL PROTECTED]> wrote:
>
> > Hi all folks,

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