1
Enclosures
1-11
About the Deskside Disk-Array Processor Enclosure
A latch on the LCC locks it into place to ensure proper connection to
the midplane. You can add or replace an LCC while the deskside DPE
is powered up.
Storage Processors
(SPs)
The SP is the DPE’s intelligent component. It defines the DPE and
differentiates the DPE from a DAE. An SP is a printed-circuit board
with dual in-line memory modules (DIMMs), a bezel with status
lights, and securing latches. The figure below locates the SP ports (A,
B, SPS/RS-232, Console/RS-232, and network/RJ45), the status
lights, the DIMM memory modules, and the FC-AL ID rotary
switches.
Figure 1-8
SP Back Panel
As shown in the figure, the SP has 4 connectors for DIMMs that
comprise both read and write caches. These DIMMs come in 128-,
256-, or 512-Mbyte capacity. Memory allocation is handled by
Navisphere Manager or other Navisphere array management utility.
Port A (with optical GBIC)
Port B (with optical GBIC)
FC-AL ID
switches
Check Light
(amber)
Active light
(green)
SPS
Console
Connectors for DIMMs
Release lever
(2 per SP)
Captive retaining
screw (2 per SP)
Network/RJ45
connection
reserved for
future use
Link/activity light
Speed light
