NonStop NS2200 Series Planning Guide

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 HDDs or SSDs (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 90).
CAUTION: If the WRITECACHE attribute is enabled on an HDD or 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 198).
NOTE: Solid state drives are supported as of J06.13.
NonStop NS2200 Hardware 35