Chapter 13. Maintenance and troubleshooting 573
13.2 Hardware and LED descriptions
This documentation helps you determine the system state using the LED indicators on the
enclosure.
13.2.1 Understanding the system state using the control enclosure LEDs
The IBM Flex System V7000 Storage Node control enclosure is installed in the IBM Flex
System Enterprise Chassis. The machine type and model (MTM) are as follows:
Machine type and model (MTM) for the control enclosure:
4939-A49, 4939-H49, or 4939-X49
Machine type and model (MTM) for the expansion enclosure:
4939-A29, 4939-H29, or 4939-X29
The enclosure contains two node canisters and up to 24 2.5-inch drives. Both spinning hard
disk drives (HDD) and solid state drives (SSD) are supported.
Figure 13-1 Locate MTM information from an IBM Flex System V7000 Storage Node enclosure
The LEDs provide a general idea of the state of the system. You can obtain more detail from
the IBM Flex System V7000 Storage Node management GUI and the Service Assistant.
Examine the LEDs when you are not able to access the management GUI or the Service
Assistant, or when the system is not showing any information about a device.
The first step is to identify and locate the control enclosure for the system that you are
troubleshooting. The next step is to determine the state of the control enclosure, which
includes the node canisters with a battery in each canister. Your control enclosure is
operational if you can manage the system using the management GUI.
Tip: To obtain the correct machine type, model number, and serial number from an IBM
Flex System V7000 Storage Node enclosure before contacting IBM Support for service,
locate a set of blue pull-out tabs on the front of a 4939 enclosure, as shown in Figure 13-1.
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