Quantum StorNext QD7000, Руководство по оборудованию

Страница: 16 / 141

Cabling concepts and best practices
This chapter describes cabling concepts, best practices, and common procedures that apply generally
across the specific cabling configuration that are covered in subsequent chapters.
Cabling concepts
Learn more about cabling concepts to help you cable your storage array.
Fabric (switched) topologies compared to direct-attach topologies
Fabric topologies use a switch or router, while direct-attach topologies do not. A fabric topology is
required if the number of host connections to a controller-drive tray is greater than the number of
available host ports on that tray's controllers.
Host connections might be InfiniBand, SAS, Fibre Channel, iSCSI, or a mix of connection types.
Switches or routers must support the required connection type or types. A combination of switches or
routers of different types might be appropriate for some configurations that support a mixture of
connection types. Drive tray connections are always direct.
Trays and shelves
Storage arrays with an E2800 or E5700 controller shelf typically use SANtricity System Manager.
You might also use the Enterprise Management Window (EMW) from SANtricity Storage Manager
to manage E2800 or E5700 controller shelves. All other controller-drive trays referenced in this
document use SANtricity Storage Manager. The following table summarizes differences in
terminology between E2800 and E5700 controller shelves and earlier models of controller-drive
trays.
Term used for E2700 and
E5600 storage arrays, and
EF560 flash arrays Term used for E2800 and
E5700 storage arrays, and
EF570 flash arrays Definition
tray shelf An enclosure you can install in
a cabinet or rack. E-Series
enclosures might include
controller canisters and drives,
or they might contain either
two environmental service
modules (ESMs) or two I/O
modules (IOMs) and drives.
controller-drive tray controller shelf An enclosure that includes one
or two controller canisters and
drives.
drive tray (or "expansion drive
tray") drive shelf (or "expansion drive
shelf") An enclosure that includes
drives and either two
environmental service modules
(ESMs) or two I/O modules
(IOMs).
slot bay One of the locations in an
enclosure for a drive, controller
canister, or ESM or IOM.
7