NonStop NS1200 Planning Guide

For power and environmental requirements, planning, installation, and emergency power-off
(EPO) instructions for the R5500 XR UPS, refer to the documentation shipped with the UPS.
Enterprise Storage System (Optional)
An Enterprise Storage System (ESS) is a collection of magnetic disks, their controllers, and a disk
cache in one or more standalone cabinets. ESS connects to the Integrity NonStop NS-series systems
either directly via Fibre Channel ports on the VIO enclosures (direct connect) or through a separate
storage area network (SAN) using a Fibre Channel SAN switch (switched connect). For more
information about these connection types, see your service provider.
NOTE: The Fibre Channel SAN switch power cords might not be compatible with the modular
cabinet PDU. Contact your service provider to order replacement power cords for the SAN switch
that are compatible with the modular cabinet PDU.
High availability and a fault-tolerant configuration for the Fibre Channel ports on the VIO
enclosures are similar to the configurations required for Fibre Channel disk drives, as explained
in “VIO Enclosure and Disk Storage Considerations” (page 52).
Cables and switches vary, depending on whether the connection is direct, switched, or a
combination:
Fibre Channel SwitchesLC-LC CablesConnection
02 Fibre Channel portsDirect connect
1 or more4 Fibre Channel portsSwitched
12 Fibre Channel ports for each direct
connection4 Fibre Channel ports for
each switched connection
Combination of direct and switched
This illustration shows an example of connections between two VIO enclosures and an ESS via
separate Fibre Channel switches:
20 NonStop NS1200 System Overview