40 IBM Flex System V7000 Storage Node Introduction and Implementation Guide
2.1 IBM Flex System V7000 Storage Node overview
When virtualizing external storage arrays, an IBM Flex System V7000 Storage Node can
provide up to 32 PB of usable capacity. An IBM Flex System V7000 Storage Node supports a
range of external disk systems similar to what the IBM Storwize V7000 system supports
today. A control enclosure contains two control canisters; an expansion enclosure contains
two expansion canisters. Both of these enclosures can contain up to 24 disk drives of the 2.5
inch form factor.
The IBM Flex System V7000 Storage Node is a modular storage system designed to fit into
the IBM Flex System Enterprise chassis. When purchased in the IBM PureFlex
configurations, the IBM Flex System V7000 Storage Node is configured from the factory into
the hardware solution purchased. If, however, the configuration wanted is not offered in the
predefined offerings, then a “Build to Order” configuration is designed to meet your needs.
The IBM Flex System V7000 Storage Node includes the capability to virtualize its own
internal storage in the same manner as the IBM Storwize V7000 does. The IBM Flex System
V7000 Storage Node is built upon the software base of the IBM Storwize V7000, which uses
technology from the IBM System Storage SAN Volume Controller (SVC) for virtualization and
the advanced functions of the IBM System Storage DS8000 family for its RAID configurations
of the internal disks, and the highly flexible graphical user interface (GUI) of the IBM XIV
Storage Subsystem for management.
The IBM Flex System V7000 Storage Node provides a number of configuration options that
are aimed at simplifying the implementation process. It also includes automated instruction
steps, called
Directed Maintenance Procedures (DMP), to assist in resolving any events that
might occur. The IBM Flex System V7000 Storage Node is a clusterable, scalable, storage
system, and an external virtualization device.
The IBM Flex System V7000 Storage Node is designed to be a scalable internal storage
system to support the compute nodes of the IBM Flex System environment. It will contain a
control enclosure that contains a pair of clustered node canisters and accommodates up to
twenty-four 2.5-inch disk drives within the enclosure. Each control enclosure can additionally
attach a maximum of two IBM Flex System V7000 Expansion Enclosures that can reside in
the IBM Flex System Enterprise chassis with it.
Optionally, up to nine IBM Storwize V7000 Expansion Enclosures can be installed externally;
however, a total of no more than nine expansion enclosures using either IBM Flex System
V7000 internal Expansion Enclosures (maximum 2), IBM Storwize V7000 external Expansion
Enclosures (maximum 9), or any combination, are supported. With the configuration of a
single IBM Flex System V7000 Control Enclosure using twenty-four 1 TB 2.5" disks attached
to nine IBM Storwize V7000 Expansion enclosures, each using twelve 3 TB 3.5" disks, the
system can manage a raw capacity of 348 TB.
The IBM Flex System V7000 Storage Node can contain up to four control enclosures in a
cluster configuration, each supporting the full configuration described, resulting in a maximum
total raw capacity of 1392 TB.
The control enclosure can support the addition of up to nine IBM Storwize V7000 expansion
enclosures connected externally. The additional expansions allow for a total of 240 disk
drives; or for a maximum capacity of 348 TB supported per control enclosure.
Tip: For maximum capacity numbers, the 7026-212 expansion enclosure and 3 TB SAS
Nearline drives must be used.
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