Connecting Cables
When adding disk bays, you need to connect power and ground cables of the disk bays and cascading cables between the bays.
Connecting Ground Cables
Devices installed in the bay should be grounded using ground terminals on the bay to prevent personal injury or device damage caused by static electricity or unexpected electric leakage.
Prerequisites
The following tools and materials are ready:
- Ground cables
- Phillips screwdriver (M3 to M6)
- Diagonal pliers
Context
The ground points of devices in a bay are reliably connected to a metal component, forming an equipotential body. Then, the ground cable of the bay power input terminal is reliably connected to the metal component, forming effective grounding. Therefore, the disk enclosures in the bay do not need to be connected to the bay through other ground cables. However, after being installed onsite, the bay must be connected to a ground bar in the equipment room through ground cables.
Procedure
- Make ground cables.
- Connect the OT terminal of a ground cable to the ground terminal of the bay (in the lower right corner of the rear door of the bay). Only the two upper ground terminals can be connected, as shown in Figure 9-28.
- Connect the other OT terminal of the ground cable to the ground terminal on the ground bar.
- Lay out the ground cable.
Connecting the Power Cables of a Bay
After a bay is installed, connect power cables to supply power to the bay.
Prerequisites
The following tools and materials have been prepared:
- PDU
- Phillips screwdriver (M3 to M6)
- Diagonal pliers
Procedure
- Obtain PDU connectors.
- Optional: Assemble a PDU connector as instructed in Figure 9-29.
- Insert a PDU plug into a PDU connector, as shown in Figure 9-30.
- Repeat Step 2 and Step 3 to connect all PDU power cables for the bay.
After all external PDU power cables have been connected, bind the slack of the cables to the top or the bottom of the bay.
Connecting Power Cables of Disk Enclosures
When SmartKit prompts you to connect the power cables of new disk enclosures, follow instructions in this section to connect the power cables.
2 U Disk Enclosures
After the disk enclosures are installed, power them on and verify that they work properly.
Prerequisites
- Disk enclosures have been installed.
- The live network connection topology is ready.
- The following installation tools and materials are available and ready for use:
- Ground cable
- Phillips screwdriver (M3 to M6)
- M5 screws
- Diagonal pliers
Precautions
- To avoid electric shock, do not wear an ESD strap when powering on a storage system.
- To avoid system data loss, do not remove or insert optical fibers, network cables, coffer disks, or interface modules when the equipment is powering on.
Procedure
- Connect power cables.
- Connect disk enclosures to the power sockets on the cabinet using AC power cables.
- Secure the AC power cables using cable clips.
- Check the indicator status of the disk enclosure to ensure that it has been properly connected to the storage system.
Figure 9-31 shows the front-panel indicators of a 2 U disk enclosure in the normal power-on state.
1
Running indicator of the disk module (steady green)
2
Location/Alarm indicator of the disk module (off)
3
Location indicator of the disk enclosure (off)
4
Alarm indicator of the disk enclosure (off)
5
Power indicator of the disk enclosure (steady green)
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-
After the device is powered on, check whether the alarm indicators on the device are on. If any alarm indicator is on, locate and rectify the fault. For details about how to locate and rectify faults, see the troubleshooting guide corresponding to your product.
If an alarm is generated on DeviceManager indicating that expansion cables of a SAS disk enclosure are incorrectly connected, remove all expansion cables and power cables from the disk enclosure where the alarm is generated, and reinsert those cables according to the standard networking. After the operation is complete, ensure that the alarm is cleared before performing subsequent operations. If the alarm persists for over 6 minutes, contact Huawei technical support.
- Log in to the OceanStor DeviceManager. Check whether Health Status and Running Status of the added disk enclosures and their disks are Normal and Online respectively.
If any disk enclosure or disk is in an abnormal state, contact Huawei technical support.
4 U Disk Enclosures
The storage system capacity can be greatly expanded by adding disk enclosures. This capacity expansion method applies to scenarios that require a large capacity.
Prerequisites
- Disk enclosures have been installed.
- The live network connection topology is ready.
- The following installation tools and materials are available and ready for use:
- Ground cable
- Phillips screwdriver (M3 to M6)
- M5 screws
- Diagonal pliers
Precautions
- During the power-on, do not wear an ESD wrist strap to avoid the risk of getting an electric shock.
- During the power-on, do not remove or insert optical fibers, network cables, coffer disks, or interface modules to avoid the risk of losing system data.
Procedure
- Connect power cables.
- Connect disk enclosures to the power sockets on the cabinet using AC power cables.
- Secure the AC power cables using cable clips.
- Check the indicator status of the disk enclosure and ensure that the disk enclosure has been connected to the storage system.
Check the indicator status of a 4 U SAS disk enclosure.
Figure 9-32 shows the front-panel indicators of a 4 U disk enclosure in the normal power-on state.
1
Running indicator of the disk module (steady green)
2
Location/Alarm indicator of the disk module (off)
3
Location indicator of the disk enclosure (off)
4
Alarm indicator of the disk enclosure (off)
5
Power indicator of the disk enclosure (steady green)
-
-
After the device is powered on, check whether the alarm indicators on the device are on. If any alarm indicator is on, you must locate and rectify the fault. For details about how to locate and rectify faults, see the Troubleshooting.
If an alarm is generated on DeviceManager indicating that expansion cables of a SAS disk enclosure are incorrectly connected, remove all expansion cables and power cables from the disk enclosure where the alarm is generated, and reinsert those cables according to the standard networking. After the operation is complete, ensure that the alarm is cleared before performing subsequent operations. If the alarm persists for over 6 minutes, contact Huawei technical support.
- Log in to the OceanStor DeviceManager. Check whether Health Status and Running Status of the added disk enclosures and their disks are Normal and Online respectively.
If any disk enclosure or disk is in an abnormal state, contact Huawei technical support.
