HP NetServer AA 4000 Manual page 6

HP AA related configuration/setup notes
Pure-local backup configuration
The DLT40r and DLT80r tape drives can share the same SCSI channel. Note that the
SCSI ID of each device must be set properly.
CE owns the DLT80r tape drives
attached.
Follow the Marathon SCSI configuration rules in the installation guide. Non-shared SCSI
devices must use SCSI IDs that are used on only one of the IOP (e.g. if a DLT drive has
SCSI ID 4 on a SCSI channel, the matching SCSI channel on the other IOP must not have
a SCSI device with ID of 4). For simplicity, it is best to configure each tape devices in
the tape rack with a unique SCSI IDs (e.g. 2, 3, 4, and 5).
Backup software should be properly installed on the CE and both IOPs. The three
instances of backup software run independently and require three licenses.
Using Veritas Backup Exec 7.3 in this configuration will give a "Storage device
configuration error"on the IOP. This is the result of the DLT 80r being configured in the
CE but not available to the IOP. This is okay because the Marathon Configuration
Manager has taken away the usage of the DLT 80r for use in the CE.
Semi-local backup configuration
The DLT or DAT tape drives are independent devices owned by the CE. Note that these
tape drives are not mirrored devices but are unique SCSI devices; the Marathon SW does
not write the same data to the tape drives as it does for disks.
SCSI ID of tape drives must be configured according to Marathon SCSI configuration
rules.
CE backup software backs up all disks, CE's and IOP's, in a HP AA system.
If the Virtual network connection between the CE and the IOPs is used to backup each
IOP, it must be set up properly. The CE must be configured to see each IOP server
through the internal virtual link as in the standard HP AA system setup.
The recommended configuration for backing up data on each IOP is to use a dedicated
NIC configured in each IOP for performing a CE controlled network backup over the
public (default) CE network connection. Below is the network backup configuration for
setting up a dedicated network connection to each IOP using unique IP addresses.
First install the new NIC cards and add the NIC adapter driver in each IOP. Next,
configure adapter bindings.
1
DLTs with autochangers for a local backup will be supported in a future release.
12/08/99
1
; each IOP owns the DLT40r drive that is directly
Hewlett-Packard Co. 6