NonStop NS2400 Series Planning Guide

CLIM Cable Management Ethernet Patch Panel
The HP Ethernet patch panel cable management product is used for cabling the IP and Telco CLIM
connections. The patch panel simplifies and organizes the cable connections to allow easy access
to the CLIM's customer-usable interfaces.
IP and Telco CLIMs each have five customer-usable interfaces. The patch panel connects these
interfaces and brings the usable interface ports to the patch panel. Each Ethernet patch panel has
24 slots, is 1U high, and should be the topmost unit to the rear of the rack. Each Ethernet patch
panel can handle cables for up to five CLIMs. It has no power connection.
Each patch panel has 6 panes labeled A, B, C, D, E, and F. Each pane has 4 RJ45 ports, and
each port is labeled 1, 2, 3, or 4. The RJ45 ports in Panel A have port names: A1, A2, A3, and
A4.
The factory default configuration depends on how many IP or Telco CLIMs and patch panels are
configured in the system. For a new system, QMS Tech Doc generates a cable table with the CLIM
interface name. This table identifies how the connections between the CLIM physical ports and
patch panel ports were configured at the factory.
If you are adding a patch panel to an existing system, ask your HP service provider to refer to the
CLuster I/O (CLIM) Installation and Configuration Guide.
SAS Disk Enclosure
The M8381-25 SAS disk enclosure is a rack-mounted disk enclosure that connects to the Storage
CLIM and supports up to 25 SAS hard disk drives or solid state drives (in any combination), and
a dual SAS domain from the Storage CLIMs to dual port SAS drives. The SAS disk enclosure
supports connections to SAS disk drives. Connections to FCDMs are not supported. For more
information about the M8381-25 SAS disk enclosure, see the HP StorageWorks D2600/D2700
Disk Enclosure User Guide.
An M8381-25 SAS disk enclosure supports 6Gbps SAS protocol. It contains:
• Twenty-five 2.5” dual-ported disk drive slots
• Two power supplies
• Two fans
• Two independent I/O modules:
SAS Domain A◦
◦ SAS Domain B
For illustrations of the SAS disk enclosure, see Figure 20 (page 86).
CAUTION: If the WRITECACHE attribute is enabled on a hard disk drive (HDD) or solid state
drive (SSD) disk volume that is connected to a Storage CLIM, HP strongly recommends using a
rack-mounted UPS to prevent data loss on that volume. The WRITECACHE enabled (WCE) option
is supported on J06.03 and later RVUs and controls whether write caching is performed for disk
writes. For details on the WRITECACHE attribute and the WCE option, refer to the SCF Reference
Manual for the Storage Subsystem (G06.28+, H06.05+, J06.03+). For considerations on using
the WCE option with a UPS, see the “UPS and Data Center Power Configurations” (page 189).
NonStop NS2400 Hardware 31