DPE component descriptions

Product Serial Number Tag

The PSNT for the 25-slot DPE is a black pull-out tag that is located between the drives in slots 16 and 17.

Figure 3. PSNT location

World Wide Name (WWN) Seed Tag

The World Wide Name (WWN) Seed tag is a blue pull-out tag that is located between the drives in slot 7 and 8.

Figure 4. WWN Seed tag location

About embedded modules

Each SP assembly contains one embedded module that can hold one 4-port card for connectivity.

Note:  Both SP assemblies must have the same type of embedded modules in the same slots.

The embedded module contains the following components:

• One 4-port card
• One non-maskable interrupt (NMI) button
• Two mini-SAS HD back-end ports
• Two RJ-45 LAN connectors
  • System management port ()
  • Service port ()
• One USB 3.0 port
• One mini-USB port (unused)
• One DB9 serial port (service access)

Note:  The following figure shows the location of these components on the embedded module in SP assembly A. The location of the components in SP assembly B is mirrored.

Figure 6. Embedded module rear view with component locations

Table 4. Embedded module component locations

Location	Description
	4-port card
	Mini serial port (unused)
	Mini-SAS HD back-end ports
	DB9 serial port (unused)
	RJ-45 LAN connector - service port
	RJ 45 LAN connector - system management port
	Non-maskable interrupt (NMI) button
	USB 3.0 port

About 4-port cards

The 4-port card is an optional component located within the embedded module. There are two supported 4-port cards: the 25GbE 4-port card and the 10GbE BaseT 4-port card.

The 25GbE 4-port card supports 1GbE SFP to RJ45, 10GbE or 25GbE SFP28, 25GbE passive TwinAx, and 10GbE active or passive TwinAx. Depending on the installed SFP or TwinAx cable, the following speeds are supported: 1GbE, 10GbE, and 25GbE. The ports may be configured individually with TwinAx or any of the supported SFPs.

The 10GbE BaseT 4-port card serves Ethernet traffic and iSCSI block protocol. The following speeds are supported: 1GbE and 10 GbE.

Embedded module and 4-port card LED status

Figure 7. Embedded module LEDs

Table 5. Embedded module LEDs

LED	Location	State	Description
Embedded module power		Amber	Embedded module has faulted
		Off	No fault has occurred, normal operation.
Ethernet port link		Green	Link established.
		Off	No link established.
Ethernet port activity		Amber	Port activity.
		Off	No port activity.
SAS port/activity Link		Blue	SAS port link is up.
		Off	No link established.
Port link		Green	Link up with high speed.
		Amber	Link up with degraded speed.
		Off	Link down.
Storage processor assembly fault		Amber	Fault has occurred.
		Blue	Storage processor assembly in Degraded Mode.
		Amber or blue blinking	System is booting.
		Blue and amber alternating (green for 3 seconds)	System not initialized. A management IP address has not been assigned.
		Blue and amber alternating at one second intervals	Storage processor assembly in Service Mode.
		Off	No fault has occurred, normal operation.
Storage processor assembly power		Green	Storage processor assembly is on (main power).
		Green blinking	Storage processor assembly is initializing a serial over LAN session (Standby Mode).
		Off	Storage processor assembly is off.
Unsafe to remove		White	Do not remove the embedded module. Improper removal could cause data loss.
		Off	Safe to remove the embedded module when the embedded module has been properly prepared.

I/O module installation priority

There are two I/O module slots per SP assembly: slot 0 and slot 1. Slot 0 has a 16 lane PCIe channel, and slot 1 has an 8 lane PCIe channel.

Populate new I/O modules in the following order to take advantage of the increased speed on slot 0. If two I/O modules are ordered, use the same installation priority for both I/O modules.

1. 4-port 25GbE Optical I/O module
2. 4-port 16Gb Fibre Channel I/O module
3. 4-port 10GbE BaseT I/O module
4. 4-port 12Gb SAS backend I/O module

When adding new I/O modules, always install I/O modules in pairs: one module in SP assembly A and one module in SP assembly B. Both SP assemblies must have the same type of I/O modules in the same slots.

I/O module LED status

Figure 9. DPE I/O module LEDs

Table 6. DPE I/O module LEDs

LED	Location	State	Description
Port link		Green or blue	Link up
		Off	Link down
Power fault		Green	Power
		Amber	Power fault

4-port 25GbE Optical I/O module

The 4-port 25GbE Optical I/O module is an Ethernet I/O module that is used to serve Ethernet network traffic and iSCSI block protocol to hosts for the platform. The I/O module uses an optical 10G or 25G capable SFP+ connection to a host or switch port.

4-port 16Gb Fibre Channel I/O module

The 4-port 16Gb Fibre Channel I/O module comes with four optical ports, one power and fault LED, and a combination link and activity LED for each optical port. This I/O module can interface at speeds of 4, 8, and 16 Gb/s FC for host or initiator layered connections.

4-port 10GbE BaseT I/O module

The 4-port 10GbE BaseT I/O module can interface at speeds of 1 Gb/s and 10 Gb/s and supports both IP(file) and iSCSI (Block) on the same SP assembly. Ports can be configured as both IP and iSCSI simultaneously. The I/O module comes with four 10-Gb/s RJ-45 ports, one power/fault LED, activity LED, and link LED for each port.

4-port 12Gb SAS backend I/O module

Where supported, the 4-port 12Gb SAS backend I/O module comes with four x4 lane mini-SAS high density (HD) ports, one power and fault LED, and a combination link and activity LED for each port. Install thisI/O module into the SP assembly to provide additional SAS buses. Labeled 12Gb SAS v1.

Note:  The optional back-end 12-Gb/s SAS module is only supported on Unity 480F, Unity 680F, and Unity 880F systems.

The 4-port 12Gb SAS backend I/O module can also be configured to support x8 lane cabling for the 80-drive DAE by combining ports 0 and 1 as back-end 2, or ports 2 and 3 to create back-end 4. The I/O module can also be configured to support both x4 lane and x8 lane back-ends simultaneously.

Note:   If the 4-port 12Gb SAS backend I/O module is to be configured for x8 lane cabling, the x8 lane cable must be inserted into the I/O module before persisting it. If the x8 lane cables are not inserted into the I/O module first, all four ports default to x4 lane ports.