Hitachi AMS 2100, Руководство по оборудованию

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Introduction
1–13
Hitachi AMS 2100/2300 Storage System Hardware Guide
iSCSI interface
The AMS 2100/2300 provides two iSCSI ports per controller (4 total per
base unit). To convert a base unit from Fibre Channel to iSCSI, replace both
controllers and install the firmware on them. The same firmware supports
both Fibre Channel and iSCSI units.
High-speed data transfer
With the 10 Gbps connection, the array provides high-speed data transfer
to and from a host computer. The maximum transfer speed is 1000 MB/s
per port. Higher throughput can be obtained, even when accessing multiple
devices connected to the same network.
The AMS2100/AMS2300 supports iSCSI (1000 Base-T). With the HBA for
iSCSI, generic NIC and software initiator, and network switch, the AMS
2100/2300 can be located up to 100 meters from the host.
50/125µm (500MHz*km bandwidth)
OM2 (limiting optical receiver, 800-M5-SN-S) 492.12 feet
(150 m)
164/04 feet
(50 m)
62.5/125µm (200MHz*km bandwidth)
OM1 (limiting optical receiver, 800-M6-SN-S) 229/65 feet
(70 m)
68.89 feet
(21 m)
Table 1-3: Supported Fiber-Optic Cables and Distances
Cable Length
Distance
LPe1150
(@ 4Gb/s)
LPe1250
(@ 8Gb/s)
NOTE: For more information on the Fibre Channel interface, refer to
Chapter 4 in the Hitachi AMS 2000 Family Storage System Reference
Guide, MK-97DF8009.
Table 1-4: iSCSI Features
Feature Mode Description
High-speed
Data Transfer iSCSI The AMS 2100/2300 supports iSCSI (1000Base-T). With
a 1 Gbps Ethernet connection, the iSCSI interface is
capable of operating at data transfer speed of up to 100
MB /sec per port.
With the HBA for iSCSI, Generic NIC + Software initiator,
and Network Switch, the AMS 2100/2300 can be located
up to 100 meters. Enough throughput can be obtained
even when having multiple access to the multiple devices
connected to the same network.
Cable iSCSI Category 6 Ethernet cable
Maximum cable length: 325 ft. / 100 m
Number of
Connectable
Devices iSCSI The subsystem supports systems that can connect up to
255 hosts for a physical port by using the switch.
(When the TrueCopy remote replication function or
TrueCopy Extended Distance function is installed and
enabled, the maximum number of connectable hosts
becomes 239.)
Security iSCSI When the system is configured to connect multiple hosts,
a function is provided that rejects a boot by any host
except a specified host. This function can prevent the
access from an unauthorized host.