SCSI Solutions White Paper - HP-UX

19
6.1.2 Tape Monitor
The Tape Monitor (dm_stape) is designed to monitor the operation of individual tape drives, as
well as various tape libraries and autoloaders. Predictive events monitored include “severe
trouble reading or writing the tape”, which indicates that while no data has been lost, there has
been a reduction in the performance or capacity of the tape, and it is recommended that the
drive head be cleaned.
6.1.3 Enclosure Monitors
The enclosure monitors include a High Availability Storage System Monitor (dm_ses_enclosure),
which is supported with the DS2300 and the SC10 enclosures, and the Storage Works Modular
Smart Array Monitor (msamon) for the MSA30 and other MSA products. Both of these will
monitor the status of the power supplies, fans, temperature, enclosure controllers, internal bus
problems, and other events associated with the operation of the enclosure. They will also
monitor the general accessibility of the disk drives in the enclosure. In addition, the MSA
Monitor will detect and report various hot-plug removal and insertion events.
6.1.4 HBA-Specific Management Utilities
6.1.4.1 Ultra320 SCSI Cards
The Ultra320 SCSI cards, A7173A and AB290A, have online configuration and management
utilities included with HP-UX’s Ultra320 driver, the MPT driver. These are command-line utilities
called mptutil and mptconfig.
The mptutil command can be used to perform online updates of the HBA firmware (known as
firmware download). It also allows the user to obtain detailed diagnostics information about the
card, firmware, and driver, including the firmware revision, chip revision, Vital Product Data
(VPD), hardware termination settings, driver trace buffer, and various statistics. In addition,
mptutil provides interfaces to read PCI configuration space and to perform various types of SCSI
aborts and resets, including bus reset.
The mptconfig command is used to display and set various SCSI parameter values, such as the
HBA port’s Initiator Id, target and initiator speed limits (maximum transfer rates), and bus width.
6.1.4.2 SCSI RAID Cards
The SCSI RAID cards have associated command-line management and configuration utilities
called saconfig and sautil.
The saconfig command allows the customer to do various RAID configuration tasks such as
create a logical drive, add a spare drive, display the current configuration, delete a logical
drive. It also can be used to control certain cache functions, including enabling the cache and
specifying the percentage of the total cache used for reading versus writing.
The sautil command is a support tool used to retrieve RAID configuration and status information
for the controller, logical drive, physical disk, cache, etc. It also provides interfaces to obtain
RAID driver state, trace log, and statistics, to update (download) new revisions of the controller
or disk firmware, to perform resets and bus scans, and to recreate the controller device files.