Quantum scalar 100 User Guide
312
Health Check
1 — Basic Function
When set to the “Basic Function” level, the ADIC Gateway periodically scans the
system resources to locate problems. Health Check status will be set if either of
the following conditions is true:
system resources to locate problems. Health Check status will be set if either of
the following conditions is true:
Temperature Sensors detect WARNING or ALARM status
Power Supply sensors detect a change in status since the last report.
2 — Interface Test
The “Interface Test” level includes the “Basic Function” Level Health Check plus
an Interface Health Check. It performs an active poll of the interface device, such
as a Fibre Channel or SCSI controller. The controller is queried in an interface-
dependent method to determine if it is currently functional. If a controller is not
functional, a Health Check trap will be sent indicating which interface failed.
an Interface Health Check. It performs an active poll of the interface device, such
as a Fibre Channel or SCSI controller. The controller is queried in an interface-
dependent method to determine if it is currently functional. If a controller is not
functional, a Health Check trap will be sent indicating which interface failed.
Also enabled at the “Interface Test” level is a test of the Fibre Channel link status
registers (which monitor FC link errors). A trap will be sent if any change in these
registers is detected.
registers (which monitor FC link errors). A trap will be sent if any change in these
registers is detected.
3 — Device Test
The “Device Test” level performs both the “Basic Function” level and “Interface
Test” level Health Checks plus a Device Health Check. It polls every attached
device to determine its status. A Device will be considered healthy if it responds to
a simple SCSI Inquiry command.
Test” level Health Checks plus a Device Health Check. It polls every attached
device to determine its status. A Device will be considered healthy if it responds to
a simple SCSI Inquiry command.
4 — Device Ready
The “Device Ready” test performs all test functions of the lower Health Check
levels plus a Device Functional Health Check. At this level, each target device is
sent a SCSI Test Unit Ready command when the interval expires. If the device
reports “Good Status,” it is considered healthy. If it is not ready, the sense data
from the device is interpreted to determine if the device is in a “normal” not ready
state, or if the device is in a failed state. For removable media devices, such as
tape drives, level 4 is treated the same as level 3.
levels plus a Device Functional Health Check. At this level, each target device is
sent a SCSI Test Unit Ready command when the interval expires. If the device
reports “Good Status,” it is considered healthy. If it is not ready, the sense data
from the device is interpreted to determine if the device is in a “normal” not ready
state, or if the device is in a failed state. For removable media devices, such as
tape drives, level 4 is treated the same as level 3.
If a device is determined to be in a “failed” state, an SNMP trap is issued.
After a successful health check, a Trap is generated.