Customer Management Connection; Storage Devices - Sun Microsystems StorEdge 3900 Series Reference And Service Manual

virtualization engine in the Sun StorEdge 6960 or 6960SL system provides physical
access to half of the underlying Sun StorEdge T3+ arrays. The virtualization engine
pairs offer two I/O paths to individual StorEdge T3+ arrays.
The virtualization engine uses virtual and physical device map synchronization. If a
virtualization engine fails, the second virtualization engine of the pair maintains the
I/O availability. All virtualization engine pairs use a single device mapping of
physical-to-virtual devices. A change in the physical or virtual mapping results in a
resynchronization of the device mappings throughout the virtualization engine
pairs. To accomplish the synchronization, each virtualization engine pair is
connected to the other virtualization engine through a redundant pair of FC switch
T ports.
2.1.3

Customer Management Connection

The customer management connection is a dedicated Ethernet connection provided
on each Storage Service Processor that connects to the designated master Sun
StorEdge 3900 and 6900 series storage subsystem. The master Storage Service
Processor collects status data from each Sun StorEdge 3900 and 6900 series machine
using the LAN. This connection is also called the SP LAN. The master Storage
Service Processor then reports the status data used by the Storage Service Processor
that is equipped with Sun StorEdge Remote Response software.
Customers can alternatively choose to do one or more of the following functions:
Use their management LAN to support network traffic other than that reported
by the Sun StorEdge Remote Response service software
Provide a private LAN to isolate the service traffic from customer traffic
Supply a secure router to isolate the customer LAN from the Storage Service
Processor LAN
2.1.4

Storage Devices

The 36-Gbyte, 73-Gbyte, and 181-Gbyte Sun StorEdge T3+ arrays provide backend
data storage. In factory-configured systems, the Sun StorEdge T3+ arrays are
configured with two LUNs per partner group or one LUN per physical unit. Each
LUN is a full-capacity RAID 5 (8 disks) volume with a segment size of 16 Kbytes and
is configured with a standby hot spare. The factory-configured basic configuration
with 181-Gbyte drives is four LUNs per partner group or two LUNs per physical
unit. Each LUN is a RAID 5 (four disks) volume with a segment size of 16 Kbytes
and is configured with a standby hot spare. Additional utilities are provided on the
Storage Service Processor that enable Sun-trained personnel to reconfigure the Sun
StorEdge T3+ array LUNs to meet workload performance requirements.
Chapter 2 Component Descriptions 2-3