NEC EXPRESS5800/R320b-M4 Configuration Manual page 15

CONFIGURATION GUIDE
8.6.3 Notes for double backup
In a single backup configuration, in case a CPU/IO module or backup device fails, backup is not possible
until the failed part is repaired or replaced. If this does not meet your system requirements, consider a
double backup configuration.
Refer to the following notes on double backup configuration.

When configuring two sets of a SAS controller, a SAS cable and a backup device, two backup devices
are recognized separately by the OS. When scheduling an automatic backup job, make a job for each
backup device so that the other backup device can backup in case one device fails.

In a double backup configuration, the device numbers of the tape devices may switch in the event of
an IO module failover. When this occurs, automatic backup cannot be performed. To resolve the
situation, re-enter the appropriate device settings again.
8.6.4 Supported backup software
See the table below for the supported backup software on NEC EXPRESS5800/R320b.
Product Name / Description
Internal LTO (SAS)
LTO3, Half height, Native capacity 400 GB
Internal LTO (SAS)
LTO4, Half height, Native capacity 800 GB
Internal LTO (SAS)
LTO5, Half height, Native capacity 1.5 TB
Internal LTO (SAS)
LTO6, Half height, Native capacity 2.5 TB
NEC Corporation
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NEC EXPRESS5800/R320b-M4 / Linux model
Tape drive
Part Number
N8151-102
N8151-90
N8151-103
N8151-106
Revision 6.0, November 2013
Backup software
NetVault8.5/8.6
RHEL5.5 or later
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NetVault9.0
RHEL5.5 or later
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