Print | Rate this content

HPE MSA 2050 SAN Storage - LED Indicators

Front panel LEDs

HPE MSA 2050 models support small form factor (SFF) and large form factor (LFF) enclosures. The SFF chassis, configured with 24, 2.5 inches SFF disks, is used as a controller enclosure or drive enclosure. The LFF chassis, configured with 12, 3.5 inches LFF disks, is used as either a controller enclosure or drive enclosure.

Enclosure bezel

The MSA 2050 enclosures are equipped with a removable bezel designed to cover the front panel during enclosure operation. The bezel assembly consists of a main body sub assembly and two ear flange subassemblies, which attach the bezel to the left and right ear flanges of the 2U enclosure.

Enclosure bezel attachment

Figure 1: Partial exploded view showing bezel alignment with 2U chassis

Orient the enclosure bezel to align its back side with the front face of the enclosure as shown in above. Face the front of the enclosure, and while supporting the base of the bezel - while grasping the left and right ear covers - position the bezel such that the mounting sleeves within the integrated ear covers align with the ball studs on the ear flanges see figure below. Gently push-fit the bezel onto the ball studs to securely attach it to the front of the enclosure.

Figure 2: Detail views of enclosure ear cover mounting sleeves

User may need to remove the bezel to access front panel components such as disk drive modules and ear kits. Although disk module LEDs are not visible when the bezel is attached, user can monitor disk behavior from the management interfaces

While facing the front of the enclosure, grasp the left and right ear covers, such that your fingers cup the bottom of each ear cover, with thumb at the top of each cover. Gently pull the top of the bezel while applying slight inward pressure below, to release the bezel from the ball studs.

NOTE: The bezel should be attached to the enclosure during operation to protect ear circuitry. To reattach the bezel to the enclosure front panel, follow the instructions provided

Integers on disks indicate drive slot numbering sequence. The enlarged detail view at right shows LED icons from the bezel that correspond to chassis LEDs. The detail view locator circle (above right) identifies the ear kit that connects to LED light pipes in the bezel (or ear cover).

LED
Description
Definition
1
Enclosure ID
Green - On
Enables to correlate the enclosure with logical views presented by management software. Sequential enclosure ID numbering of controller enclosures begins with the integer 1. The enclosure ID for an attached drive enclosure is nonzero.
2
Disk drive Online/Activity
Shown below in disk drive LED
3
Disk drive Fault/UID
Shown below in disk drive LED
4
Unit Identification (UID)
  • Blue - Identified.

  • Off - Identity LED off.

5
Heartbeat
  • Green - The enclosure is powered on with at least one power supply operating normally.

  • Off - Both power supplies are off; the system is powered off.

6
Fault ID
  • Amber - Fault condition exists. The event has been identified, but the problem needs attention.

  • Off - No fault condition exists.

Ear covers

Ear covers can be used instead of the enclosure bezel. callouts apply to the table beneath for detail views of mounting sleeve attachment to ball studs located on left and right ears.

Figure 3: Ear covers option to enclosure bezel

Disk drive LEDs

Figure 4: LEDs: Disk drive combinations - enclosure front panel

Disk drive LED key
Item
Description
1
Online/Activity (green)
2
Fault/UID (amber/blue)
Online/Activity (green)
Fault/UID (amber/blue)
Description
On
Off
Normal operation. The disk drive is online, but it is not currently active.
Blinking irregularly
Off
The disk drive is active and operating normally.
Off
Amber, blinking regularly(1 Hz)
Offline: the disk is not being accessed. A predictive failure alert may have been received for this device. Further investigation is required.
On
Amber, blinking regularly(1 Hz)
Online: possible I/O activity. A predictive failure alert may havebeen received for this device. Further investigation is required.
Blinking irregularly
Amber, blinking regularly(1 Hz)
The disk drive is active, but a predictive failure alert may have been received for this disk. Further investigation is required.
Off
Amber, solid1,2,
Offline: No activity. A failure or critical fault condition has been identified for this disk.
Off
Blue, solid
Offline: the disk drive has been selected by a management application such as the SMU.
On or blinking
Blue, solid
The controller is driving I/O to the disk, and it has been selected by a management application such as the SMU.
Blinking regularly (1 Hz)
Off
CAUTION: Do not remove the disk drive. Removing adisk may terminate the current operation and cause data loss. The disk is reconstructing.
Off
Off
Either there is no power, the drive is offline, or the drive is not configured.
NOTE:
  1. This Fault/UID state can indicate that the disk is a leftover. The fault may involve meta data on the disk rather than the disk itself.
  2. This Fault/UID state can indicate an FDE-related issue. The fault may indicate an inserted FDE disk that is in a locked state, or it may indicate insertion of a non-FDE disk into an FDE-secured system.

top

Rear panel LEDs

Controller enclosure - rear panel layout

The diagram and table below display and identify important component items comprising the rear panel layout of theMSA 2050 controller enclosure (MSA 2050 SAN is shown in the example).

Figure 5: MSA 2050 SAN Array: Rear panel

1
AC Power supplies
2
Controller module A
3
Controller module B
4
Host ports: used for host connection or replication
5
Network port
6
Disabled button (used by engineering only) (Stickers shown covering the openings)
7
SAS expansion port
8
CLI port (USB - Type B)
9
Service port 2 (used by service personnel only)
10
Reserved for future use
11
Service port 1 (used by service personnel only)
12
DC Power supply (2) - (DC model only)
13
DC Power switch

A controller enclosure accommodates two power supply FRUs of the same type - either both AC or both DC - within thetwo power supply slots (see two instances of callout 1 above). The controller enclosure accommodates two controlle module FRUs of the same type within the I/O module slots (see callouts 2 and 3 above).

NOTE: MSA 2050 controller enclosures support dual-controller configuration only. A controller module must beinstalled in each IOM slot to ensure sufficient airflow through the enclosure during operation.

MSA 2050 SAN controller module - rear panel LEDs

Figure 6: LEDs: MSA 2050 SAN controller module (FC and 10GbE SFPs)

LED
Description
Definition
1
Host 4/8/16 Gb FC1Link Status/Link Activity
  • Off - No link detected.

  • Green - The port is connected and the link is up.

  • Blinking green - The link has I/O or replication activity.

2
OK to Remove
  • Off - The controller module is not prepared for removal.
  • Blue - The controller module is prepared for removal.
3
FRU OK
  • Off - Controller module is not OK.

  • Blinking green - System is booting.

  • Green - Controller module is operating normally.

4
Host 10GbE iSCSI2,3Link Status/Link Activity
  • Off - No link detected.

  • Green - The port is connected and the link is up.

  • Blinking green - The link has I/O or replication activity.

5
Network Port LinkActive Status4
  • Off - The Ethernet link is not established, or the link is down.

  • Green - The Ethernet link is up (applies to all negotiated link speeds).

6
Network Port Link Speed 4
  • Off - Link is up at 10/100base-T negotiated speeds.

  • Amber - Link is up and negotiated at 1000base-T.

7
FRU OK
  • Off - Controller module is not OK.

  • Blinking green - System is booting.

  • Green - Controller module is operating normally.

8
Fault/Service Required
  • 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.

9
Cache Status
  • Green - Cache 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 statusLED does not, by itself, indicate that any user data is at risk or that any action isnecessary.

  • 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.

10
Expansion Port Status
  • Off - The port is empty or the link is down.
  • On - The port is connected and the link is up.
NOTE:
  1. When in FC mode, the SFPs must be a qualified 8Gb or 16Gb fibre optic option described in the QuickSpecs. A 16 Gb/s SFP can run at 16 Gb/s, 8 Gb/s,4 Gb/s, or auto-negotiate its link speed. An 8 Gb/s SFP can run at 8 Gb/s, 4 Gb/s, or auto-negotiate its link speed.
  2. When in 10 GbE iSCSI mode, the SFPs must be a qualified 10 GbE iSCSI optic option as described in the QuickSpecs.
  3. When powering up and booting, iSCSI LEDs will be on/blinking momentarily, then they will switch to the mode of operation.
  4. When port is down, both LEDs are off.

Figure 7: LEDs: MSA 2050 SAN controller module (1 Gb RJ-45 SFPs)

LED
Description
Definition
1
Not used in example 1
The FC SFP is not show here
2
OK to Remove
  • Off - The controller module is not prepared for removal.

  • Blue - The controller module is prepared for removal.

3
FRU OK
  • Off - Controller module is not OK.

  • Blinking green - System is booting.

  • Green - Controller module is operating normally.

4
Host 1 Gb iSCSI 2,3Link Status/Link Activity
  • Off - No link detected.

  • Green - The port is connected and the link is up; or the link has I/O or replication activity.

5
Network Port LinkActive Status4
  • Off - The Ethernet link is not established, or the link is down.
  • Green - The Ethernet link is up (applies to all negotiated link speeds).
6
Network Port Link Speed4
  • Off - Link is up at 10/100base-T negotiated speeds.

  • Amber - Link is up and negotiated at 1000base-T.

7
Unit Locator
  • Off - Normal operation.

  • Blinking white - Physically identifies the controller module.

8
Fault/Service Required
  • 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.

9
Cache Status
  • Green - Cache 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.

10
Expansion Port Status
  • Off - The port is empty or the link is down.

  • On - The port is connected and the link is up.

NOTE:
  1. When in FC mode, the SFPs must be a qualified 8 Gb or 16 Gb fibre optic option described in the QuickSpecs.
  2. When in 1 Gb iSCSI mode, the SFPs must be a qualified RJ-45 iSCSI option as described in the QuickSpecs. The 1 Gb iSCSI mode does not support aniSCSI optic option.3
  3. When powering up and booting, iSCSI LEDs will be on/blinking momentarily, then they will switch to the mode of operation.
  4. When port is down, both LEDs are off.
NOTE: Once a Link Status LED is lit, it remains so, even if the controller is shutdown via the SMU or CLI.

When a controller is shutdown or otherwise rendered inactive - its Link Status LED remains illuminate - falselyindicating that the controller can communicate with the host. Though a link exists between the host and the chip on the controller, the controller is not communicating with the chip. To reset the LED, the controller must be properlypower-cycled

Cache Status LED details

The storage enclosure's unified CPLD provides integrated Power Reset Management (PRM) functions. During power on,discrete sequencing for power on display states of internal components is reflected by blinking patterns displayed by theCache Status LED

Item
Display states reported by Cache Status LED during power on sequence
Display state
0
1
2
3
4
5
6
7
Component
VP
SC
SAS BE
ASIC
Host
Boot
Normal
Reset
Blink pattern
On 1/Off 7
On 2/Off 6
On 3/Off 5
On 4/Off 4
On 5/Off 3
On 6/Off 2
Solid/On
Steady

Once the enclosure has completed the power on sequence, the Cache Status LED displays Solid/On (Normal), beforeassuming the operating state for cache purposes.

Cache status behaviour

Cache status behaviourIf the LED is blinking evenly, a cache flush is in progress. When a controller module loses power and write cache containsdata that has not been written to disk, the supercapacitor pack provides backup power to flush (copy) data from writecache to CompactFlash memory. When cache flush is complete, the cache transitions into self-refresh mode.

If the LED is blinking momentarily slowly, the cache is in a self-refresh mode. In self-refresh mode, if primary power isrestored before the backup power is depleted (3–30 minutes, depending on various factors), the system boots, finds datapreserved in cache, and writes it to disk. This means the system can be operational within 30 seconds, and before the typical host I/O time-out of 60 seconds, at which point system failure would cause host-application failure. If primary power is restored after the backup power is depleted, the system boots and restores data to cache from Compact Flash,which can take about 90 seconds. The cache flush and self-refresh mechanism is an important data protection feature; essentially four copies of user data are preserved: one in controller cache and one in Compact Flash of each controller.The Cache Status LED illuminates solid green during the boot-up process. This behavior indicates the cache is logging all POSTs, which will be flushed to the CompactFlash the next time the controller shuts down.

CAUTION: If the Cache Status LED illuminates solid green - and you wish to shut-down the controller - do so from theuser interface, so unwritten data can be flushed to Compact Flash.

Power supply LEDs

Power redundancy is achieved through two independent load-sharing power supplies. In the event of a power supplyfailure, or the failure of the power source, the storage system can operate continuously on a single power supply. Greater redundancy can be achieved by connecting the power supplies to separate circuits. DC power supplies are equipped witha power switch. AC power supplies do not have a power switch. Whether a power supply has a power switch is significant to powering on/off. Power supplies are used by controller and drive enclosures.

LED
Description
Definition
1
Input Source Power Good
  • Green - Power is on and input voltage is normal.

  • Off - Power is off or input voltage is below the minimum threshold.

2
Voltage/Fan Fault/Service Required
  • Amber - Output voltage is out of range or a fan is operating below theminimum required RPM.

  • Off - Output voltage is normal.

MSA 2050 LFF and SFF drive enclosures - Rear panel layout

MSA 2050 controllers support the 3.5 inshes 12-drive enclosure and the 2.5 inches 24-drive enclosure for adding storage. The frontpanel of the 12-drive enclosure looks identical to the MSA 2050 Array LFF front panel. The front panel of the 24-drive enclosure looks identical to the MSA 2050 Array SFF front panel. The rear panel of the MSA 2050 LFF Disk Enclosure(12-drive) and the MSA 2050 SFF Disk Enclosure (24-drive) enclosures are identical, as shown below.

LED
Description
Definition
1
Power supply LEDs
See above
2
Unit Locator
  • Off - Normal operation.
  • Blinking white - Physically identifies the expansion module.
3
OK to Remove
Not implemented.
4
Fault/Service Required
  • Amber - A fault has been detected or a service action is required.

  • Blinking amber - Hardware-controlled powerup or a cache flush or restoreerror.

5
FRU OK
  • Green - Expansion module is operating normally.

  • Blinking green - System is booting.

  • Off - Expansion module is not OK.

6
SAS In Port Status
  • Green - Port link is up and connected.

  • Off - Port is empty or link is down.

7
SAS Out Port Status
  • Green - Port link is up and connected.

  • Off - Port is empty or link is down.

top

Legal Disclaimer: Products sold prior to the November 1, 2015 separation of Hewlett-Packard Company into Hewlett Packard Enterprise Company and HP Inc. may have older product names and model numbers that differ from current models.

Provide feedback

Please rate the information on this page to help us improve our content. Thank you!
Document title: HPE MSA 2050 Storage - LED Indicators
Document ID: emr_na-a00022005en_us-5
How helpful was this document?
How can we improve this document?
Note: Only English language comments can be accepted at this time.
Please wait while we process your request.