Users Guide

Table 14. Differences between CPF and DPF
Characteristic CPF DPF and Load Balancing
Device type SMC
1
SSC
2
LUN
3
LUN 1 LUN 0
Host-side failover Yes Yes
6
Target-side failover Yes Yes
6
Device driver required Yes Yes
Supported operating systems
4
AIX
®
, SuSE Linux, Red Hat
Enterprise Linux, Solaris,
Windows
AIX, SuSE Linux, Red Hat
Enterprise Linux, Solaris,
Windows
5
(DPF only)
Order feature to obtain license Yes Yes
Notes:
1. SMC = SCSI-3 Medium Changer Specication (library)
2. SSC = SCSI-3 Stream Commands (drive)
3. LUN = logical unit number
4. See “Host connectivity” on page 20 for details.
5. Load balancing is not supported on Windows
6. Full-height tape drives only
Alerts and logging
The library sends alerts about the library and attached tape drives, and offers audit-logging to track user
actions.
• TapeAlert Support: The tape library is compatible with TapeAlert technology, which provides error and
diagnostic information about the drives and the library to the host application. The library provides this
error and diagnostic information as TapeAlert flags that are reported to the application by the SCSI
LOG SENSE command. See “TapeAlert flags” on page 105.
• Email (SMTP - Simple Mail Transfer Protocol) Notications: The library can congure email
notication of library events. The library must have network access to an SMTP server. See “Locating
Management functions” on page 63.
• Remote Logging (rsyslog): The library can send syslog (system log) notications to a congured remote
(rsyslog) server. When system events occur, the ML3 tape library creates a log of these events. With this
notication feature congured, the library sends a notication of the event to the syslog server. The
syslog server keeps its own log of system events. (The syslog server is a customer-provided server.) See
“Locating Management functions” on page 63.
• SNMP Support: The Simple Network Management Protocol (SNMP) allows the library to send alerts
over a LAN network to a monitoring server.
Occasionally, the library might encounter situations that you want to know about. These situations can
be conditions that affect the library performance, such as an open door that causes the library to stop.
You might also want to log user actions, such as a cartridge move or export that is initiated from the
Management GUI. SNMP messages can alert you of these conditions.
The library provides a standard TCP/IP protocol that is called SNMP to send alerts about conditions over
a TCP/IP LAN network to an SNMP monitoring server. These alerts are called SNMP traps. Using the
information that is supplied in each SNMP trap, the monitoring server (together with customer-supplied
software) can alert operations staff of possible problems or operator interventions that occur. Many
monitoring servers can be used to send email or pager notications when they receive an SNMP alert.
See the manual for your network management application.
Chapter 1. Overview
19