Owners Manual
Table Of Contents
- Dell EMC PowerVault ME4 Series Storage System Owner’s Manual
- Contents
- Storage system hardware
- Troubleshooting and problem solving
- Module removal and replacement
- ESD precautions
- Dealing with hardware faults
- Firmware updates
- Continuous operation during replacement
- Shutting down attached hosts
- Shutting down a controller module
- Verifying component failure
- Customer-replaceable units (CRUs)
- Attach or remove the front bezel of a 2U enclosure
- Replacing a drive carrier module in a 2U enclosure
- Replacing a DDIC in a 5U enclosure
- Replacing a controller module or IOM in a 2U or 5U enclosure
- Replacing a power supply unit (PSU) in a 5U enclosure
- Replacing a fan cooling module (FCM) in a 5U enclosure
- Replacing a power cooling module (PCM) in a 2U enclosure
- Completing the component installation process
- Verifying component operation
- Performing updates in PowerVault Manager after replacing an FC or SAS HBA
- Events and event messages
- Connecting to the CLI port using a serial cable
- Technical specifications
- Standards and regulations
Table 7. ME4 Series 10Gbase-T controller module LEDs (continued)
LE
D
Description Definition
7 Cache status
3
● Green—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.
● Off—In a working controller, cache is clean (contains no unwritten data). This is an
occasional condition that occurs while the system is booting.
● Blinking green—A CompactFlash flush or cache self-refresh is in progress, indicating
cache activity.
8 Network Port Activity
Status
4
● Off—The Ethernet link is not established, or the link is down.
● Green—The Ethernet link is up (applies to all negotiated link speeds).
9 Network Port Link Speed
4
● Off—Link is up at 10/100base-T negotiated speeds.
● Amber—Link is up and negotiated at 1000base-T.
10 Expansion Port Status
● Off—The port is empty or the link is down.
● Green—The port is connected and the link is up.
1
10Gbase-T connectors must use qualified cabling options.
2
When powering up and booting, iSCSI LEDs will be on/blinking momentarily, then they will switch to the mode of operation.
3
Cache Status LED supports power on behavior and operational (cache status) behavior.
4
When port is down, both LEDs are off. See also Cache Status LED – power on behavior on page 27.
Figure 33. ME4 Series SAS controller module LEDs
Table 8. ME4 Series SAS controller module LEDs
LE
D
Description Definition
1 Host 12 Gb SAS
1-2
● Link Status
● Link Activity
● Green—The port is connected and the link is up.
● Amber—Partial link exists (one or more lanes down).
● Blinking green or amber—Host link activity is detected.
2 OK
● Green—The controller is operating normally.
● Blinking green—System is booting.
● Off—The controller module is not OK, or is powered off.
3 Fault
● Off—The controller is operating normally.
● Amber—A fault has been detected or a service action is required.
● Blinking amber—Hardware-controlled power-up or a cache flush or restore error.
4 OK to remove
● Off—The controller is not prepared for removal.
● Blue—The controller module is prepared for removal.
5 Identify White—The controller module is being identified.
6 Cache status
3
● Green—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
26 Storage system hardware