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.
