As my current workstation only supports ‘slow’ PCI, there wouldn’t have been much sense in buying SATA-disks. Therefore, I have ordered a third hard disk of the given type. This will enable me to create 3x 78GB partitions which will result in a 156GB logical volume running on (SW-)RAID-5. On this I want to create a 120GB /home partition - this will be more than twice as much as I have today.
In addition, another 512MB of RAM and a USB-2.0/FireWire PCI card are coming soon.
For the server I bought two simple 20GB ATA disks, to be put on (SW-)RAID-1. This will carry the /home partition. As devil wished, one of the two SCSI-disks carrying the system crashed while building the two ATA disks in. So everything delays until the spare SCSI disk I ordered replaces the broken one.