EMC VMAX 100K, Руководство по эксплуатации продукта

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Note
SRDF/A device pacing is not supported in HYPERMAX OS.
Starting in HYPERMAX OS, all SRDF groups are dynamic.
Moving dynamic devices between SRDF groups
You can move dynamic SRDF devices between groups in SRDF/S, SRDF/A and
SRDF/A MSC solutions without incurring a full synchronization. This incremental
synchronization reduces traffic on the links when you:
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Transition to a different SRDF topology and require minimal exposure during
device moves.
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Add new SRDF devices to an existing SRDF/A group and require fast
synchronization with the existing SRDF/A devices in the group.
Director boards, links, and ports
SRDF links are the logical connections between SRDF groups and their ports. The
ports are physically connected by cables, routers, extenders, switches and other
network devices.
Note
Two or more SRDF links per SRDF group are required for redundancy and fault
tolerance.
The relationship between the resources on a director (CPU cores and ports) varies
depending on the operating environment.
HYPERMAX OS
On arrays running HYPERMAX OS:
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The relationship between the SRDF emulation and resources on a director is
configurable:
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One director/multiple CPU cores/multiple ports
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Connectivity (ports in the SRDF group) is independent of compute power
(number of CPU cores). You can change the amount of connectivity without
changing compute power.
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Each director has up to 16 front end ports, any or all of which can be used by
SRDF. Both the SRDF Gigabit Ethernet and SRDF Fibre Channel emulations can
use any port.
Note
If hardware compression is enabled, the maximum number of ports per director is
12.
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The data path for devices in an SRDF group is not fixed to a single port. Instead,
the path for data is shared across all ports in the group.
Enginuity 5773 through 5876
On arrays running Enginuity 5773 (DMX3 and DMX4) through 5876 (VMAX Family):
Remote replication solutions
Director boards, links, and ports 125