Backup/Recovery Guide for HP AA Solutions

12/08/99 Hewlett-Packard Co. 5
each IOP. The tape
rack has two SCSI
channels, that each
operate two of the
tape devices. On
each of the IOP one
tape device is
configured on the
CE using the
Marathon manager,
the other tape device
is left in the IOP.
devices can degrade
performance of a SCSI
HBA channel. Use a
dedicated SCSI HBA
and save internal SCSI
for the disk Netraid.
The internal DLT drive
requires two bay slots
and the DAT only
requires one. Use
Marathon manager to
configure Tape device
into CE.
If virtual network link
to IOP is not available
for network backup,
add dedicated network
card on each IOP.
Connect to a private
backup LAN for best
network backup
performance and to
reduce load on user
network.
Tape devices Pure-local backup
requires duplicate
tape drives for both
CE and IOPs for
assured availability.
Preferably the larger
capacity DLT drive
should backup CE
where most of the
data resides.
Since the storage
size for the IOP in
general is small,
low-cost and smaller
capacity DAT drives
are ideal.
In semi-local backup
configuration, only
tape drives for CE are
required. Again use
DLT 80 tape drives for
greater data storage
capacity or can use
DAT 24 where data
capacity is not
significantly large.
Use an autochangers
for the network
backup. Since the
changer usually cost
more but can be
shared to backup other
systems on the same
network.
Backup software
installation/config
uration
Pure-local backup
requires three
complete installation
of backup software.
One for CE, and one
for each IOP.
Install backup software
on CE for local backup.
The IOPs are clients to
the CE. Only client-
side backup software
components are
required on each IOPs.
In network backup
configuration, the CE
and both IOP are
backup clients. Each
require only the client-
side backup software
components.