Cache Status Leds - HP P5389A - Intel Pentium III-S 1.4 GHz Processor Upgrade User Manual

About Your New Controller
Table 2-3: LED Display During Controller Active
LED Function
3 Indicates the controller's internal operating system is in its idle
loop.
4 Indicates that the controller's internal operating system is
processing an interrupt.
5 Reserved for future use.
6 Indicates that the cache controller is using DMA to perform a data
transfer.
7 Indicates the controller is generating parity information for a RAID
5 array (hardware XOR).
8 Indicates that there is a command on the SCSI bus. IRQ Lit only
when the controller activates an interrupt on the host PCI bus.

Cache Status LEDs

Two LEDs on the Adaptec SCSI RAID controller indicate the status of the onboard
cache RAM. For the location of the LEDs on your controller, refer to "Board Layout"
in this chapter.
•
The green ECC Enabled LED is lit when the installed DIMMs are ECC memory
modules. This indicates that the controller data cache is ECC protected.
•
The red ECC Error LED is lit when a correctable or non-correctable error has
been detected in one of the ECC DIMMs. After the error has been corrected, the
LED will be on until the controller is powered down. Cache failure information is
recorded in the controller error log.
2-8
continued
HP 2100S SCSI RAID Controller User Guide