IBM Flex System V7000 User Manual

52 IBM Flex System V7000 Storage Node Introduction and Implementation Guide
2.4.2 Expansion canister
The expansion canister connects the expansion disks to the control canister using the SAS2
6 Gbps chain interface. This module also enables the daisy-chaining of additional expansions
to be connected behind it to further expand the capacity of the system’s storage. The
expansion canister is also a Customer Replaceable Unit (CRU). Figure 2-6 shows a picture of
the expansion canister with its cover removed.
Figure 2-6 Components and board layout of the expansion canister
As shown in Figure 2-6, the expansion canister does not contain a battery backup unit like the
control canister does. It does have an additional SAS2 connection (A) on it to allow for the
continuation of the chain to additional expansions. Figure 2-7 shows the SAS connection
ports and the status indicators on the front of the expansion enclosures.
Figure 2-7 Expansion enclosure with connection ports and indicators
As the indicators on the expansion enclosure are a subset of the ones that are available on
the control enclosure, Table 2-3 on page 51 provides the details of their definitions.
A

IBM Flex System V7000 Specifications

General

Form Factor	2U
Model	IBM Flex System V7000
Category	Storage
Power Supply	Dual redundant power supplies
Storage Controller	Dual active-active controllers
RAID Levels	RAID 0, 1, 5, 6, 10
Maximum Drives	240
Expansion Enclosures	Up to 9
Drive Types Supported	SSD, HDD
Host Interface Ports	8 Gbps FC
Scalability	Scalable with expansion enclosures
Operating Temperature	5°C to 40°C
Management Interface	Web-based GUI, CLI, SMI-S