Hi
I agree to Lance, so I have nothing to add. For use of motherboard and
disks,
also SCSI controller, I think there are many recomendations.
I got various systems with Asus mobos, Gigabyte mobos and Elitegroup
mobos.
All systems have one thing in common: an Adaptec controller (aic7xxx
family) and
Seagate SCSI disks.
I used IBM disks in one of the systems and had trouble (read my messages
with topic
Adaptec 2940 u2w timeouts), so I recommend the Seagates, because they
never caused
any trouble in the past (knocking on wood).
I think Western Digital disks would be a good choice for system disks,
too.
Dietmar
D. Lance Robinson wrote:
>
> Hi Lucio,
>
> Lucio Godoy wrote:
> >
> > The idea of using raid is to add more disks onto the scsi
> > controler (Hot adding ?) when needed and combine the newly
> > added disk to the previous disks as one physical device.
> >
> > Is it possible to add another disk without having to switch of the
> > machine?
>
> There are special disk enclosures that allow you to add new scsi disks
> into the drive bays without turning the power off. HOWEVER, the RAID
> device driver does not allow you to add a disk to enlarge the raid
> device's size. Hot adding is only used for replacement of a faulty
> device.
>
> > is it possible to combine that newly added disk to the previous physical
> > device?
>
> Not to make it bigger as stated above.
>
> If you want to enlarge a device using RAID level 0, 4 or 5, you will
> need to:
> * backup your data.
> * verify your backup is okay.
> * add the disk.
> * create a new RAID device (mkraid)
> * restore your backup.
>
> <>< Lance.
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