Figure 2 Connections Between Storage CLIMs and ESS
For fault tolerance, the primary and backup paths to an ESS logical device (LDEV) must go
through different Fibre Channel switches.
Some storage area procedures, such as reconfiguration, can cause the affected switches to
pause. If the pause is long enough, I/O failure occurs on all paths connected to that switch. If
both the primary and the backup paths are connected to the same switch, the LDEV goes down.
For more information, see the documentation that accompanies the ESS.
Tape Drive and Interface Hardware (Optional)
For an overview of tape drives and the interface hardware, see
and
“SAS Ports to SAS Tape Devices” (page 74)
For a list of supported tape devices, ask your Hewlett Packard Enterprise service provider to
refer to the
NonStop Storage Overview
.
Preparation for Other Hardware
This guide provides the specifications only for the NS2100 system modular cabinets and
enclosures identified earlier in this section. For site preparation specifications for other Hewlett
Packard Enterprise hardware that will be installed at the site with the NS2100 systems, consult
with your Hewlett Packard Enterprise account team. For site preparation specifications relating
to hardware from other manufacturers, refer to the documentation for those devices.
Component Location and Identification in an NS2100 System
This subsection includes these topics:
•
•
“Rack and Offset Physical Location ” (page 29)
•
“Blade Element Group-Module-Slot Numbering ” (page 29)
•
“VIO Enclosure Group-Module-Slot Numbering ” (page 31)
•
“CLIM Connection Group-Module-Slot-Port Numbering ” (page 33)
Preparation for Other Hardware
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