Msan Supported Limits - McDATA StorageWorks 2/140 - Director Switch Planning Manual

mSAN Supported Limits

Table 4-2
Feature
SAN routers per mSAN
mFCP IRLs between
SAN routers
Fabrics per mSAN
R_Port connections per fabric
from all SAN routers
Fibre Channel switches
per fabric
Fibre Channel switches
per mSAN
Devices per fabric
Devices imported -
single fabric
Devices imported -
all fabrics
If a direct Fibre Channel connection exists between routed fabrics,
storage traffic traverses the Fibre Channel ISL and not the router-
to-router mFCP link. Only SNS traffic traverses the mFCP link.
However, if a router-to-router mFCP link is the only path between
two Fibre Channel devices, the link is traversed by storage traffic.
Because a SAN router is the edge switch for every routed fabric and
advertises Domain_ID 30 or 7E as a direct-attach virtual switch,
mFCP links do not participate in FSPF protocol in the mSAN.
mSAN Supported Limits
Table 4-2 summarizes the supported hardware and connectivity
limits for a routed mSAN. Limits to the scale of an mSAN are due to
inherent limits to Fibre Channel fabric SNS and SAN router pSNS
databases.
An mSAN can contain up to two (2) Eclipse 2640 SAN Routers.
Maximum number of mFCP connections between two SAN Routers is
four (4).
Maximum number of fabrics per mSAN is six (6). Twelve fabrics can be configured at the
SANvergence Manager application, but only six are supported.
Maximum number of ISLs connected to a fabric from all SAN Routers (in one mSAN) is four (4).
This provides eight Gbps bandwidth between the fabric and routers. The number of SAN routers
(one or two) does not affect this limit.
Maximum number of directors or fabric switches per fabric is 12. The number of SAN routers
(one or two) does not affect this limit.
Maximum number of directors or fabric switches per mSAN is 48. The number of fabric elements
per fabric may vary, but the total must not exceed 48. The number of SAN routers (one or two)
does not affect this limit.
Maximum number of devices per fabric is 1024. This value is also the SNS database limit for
each fabric.
Maximum number of devices that can be imported from one fabric is 504.
Maximum number of devices that can be imported to the SAN router mSNS database is 512. All
zoned devices (imported from a fabric or router-attached) are registered in the SNS databases of
all connected fabrics, thus the import limit equals the fabric SNS or router mSNS database limit.
Implementing SAN Internetworking Solutions
Supported Limit
Implementing SAN Internetworking Solutions
4
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