PAC STORAGE PS 4000 Gen2 Series, Руководство по оборудованию, Страница: 59 / 108

PS 4000 Gen2 Series Hardware Manual 2-33
Component Description
SAN Storage System Redundant controllers with a total of 8 host ports
HBA
iSCSI initiators, preferably PCIe TOE (TCP/IP offload engine) capable
cards
GbE Cables GbE network cables
GbE Switch Ports divided into 2 virtual LANs to separate access from host to targets
Software
MPIO to manage the fault-tolerant paths with failover/failback and load
balance capabilities. Use MPIO multipathing software for the operating
system to identify the alternative paths to the same logical drive.
RAID Configuration
•
This configuration does not support remote replication functionality.
To set up remote replication, refer to High Availability IP SAN
(Recommended for Remote Replication) or High Availability IP SAN
with Port Trunk (Remote Replication-Enabled).
•
Four logical drives (each logical drive has four member drives).
You can include the drives from the expansion systems for better
performance.
•
LD0 mapped to CH0 AID and CH0 BID; LD assigned to controller A
•
LD1 mapped to CH1 AID and CH1 BID; LD assigned to controller A
•
LD2 mapped to CH2 AID and CH2 BID; LD assigned to controller B
•
LD3 mapped to CH3 AID and CH3 BID; LD assigned to controller B
CH0 AID*
CH1 AID*
Logical drive assignment
CH2 BID*
CH3 BID*
IMPORTANT! In the event of single-controller failure, a logical drive is accessed via the host IDs
managed by the alternate controller. The host IDs and port IPs do not failover to the remaining
controller. In this case, MPIO driver is necessary for path redundancy and controller failover.