HP MSA Controllers - Manual (Page 18)

18 HP 2012i Modular Smart Array user guide • January 2013
Controller
module Unit Locator White Off Normal operation.
Blink Physically identifies the controller module.
Controller
module OK to
Remove Blue Off The controller module is not prepared for removal.
On The controller module can be removed.
Controller
module Fault/Service
Required Amber On A fault has been detected or a service action is
required.
Blink Indicates a hardware-controlled power up or a
cache flush or restore error.
Controller
module OK Green Off Controller module is not OK.
On Controller module is operating normally.
Blink System is booting.
Controller
module Cache status Green Off Cache is clean (contains no unwritten data).
On Cache is dirty (contains unwritten data) and
operation is normal. The unwritten information can
be log or debug data that remains in the cache, so
a Green cache status LED does not, by itself,
indicate that any user data is at risk or that any
action is necessary.
Blink A Compact Flash flush or cache self-refresh is in
progress. Indicates cache activity.
Controller
module Host activity Green Off The host ports have no I/O activity.
Blink At least one host port has I/O activity.
Controller
module Ethernet link status Green Off The Ethernet port is not connected or the link is
down.
On The Ethernet link is up.
Table 1-5 Controller LEDs (Back) (Continued)
Location LED Color State Description