Description
Rule
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number
Maximum of seven hops (eight switches) between any two communicating devices. The
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StorageWorks SAN Switch Integrated 32 or 64 and the HP SureStore FC Switch 6164 add a
maximum of two hops between devices, depending on the device-to-switch connections and
device-to-device access.
16
SAN Switch 2/8-EL and 2/16-EL support a maximum of four switches in a fabric by default. A
license upgrade is available to support fabrics with more than four switches.
17
When using SAN Switch 2/8-EL, 2/16-EL, or 2/16 switches to connect to EVA storage systems,
HP recommends a maximum of one storage port connection on a single switch. If you have more
than one EVA connection on a single switch, HP recommends that each storage port be connected
to a different 4-port quad (for example, ports 0–3 and ports 4–7).
Note: Direct connect ISLs to any 8 Gb switches is not supported with the SAN Switch 2/8-EL,
2/16-EL, or 2/16 switches.
18
SAN Switch 2/8-V and 2/16-V support a maximum of two switches in a fabric by default. A
license upgrade is available to support fabrics with more than two switches.
19
HP SureStore FC 1Gb/2Gb Entry Switch 8B and Compaq StorageWorks SAN Switch 8-EL
support one E_Port connection. (See “SAN fabric connectivity rules” on page 167 for more
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information.)
20
Compaq Fibre Channel Storage Switch 8 and Storage Switch 16 support a maximum of four
switches in fabrics with these switches only, or in fabrics with these switches and any 1 Gb/s
SAN switches. VC Encoded Address Mode must be set for 1 Gb/s SAN switches (see the SAN
switch documentation). These switches are not supported in fabrics with 2 Gb/s or 4 Gb/s
switches.
21
NOTE:
Not all topologies can support the maximum port or switch count. See
“Topology maximums” on page 46.
Switch database size
Table 28 describes the database size rules for B-seriesFibre Channel switches in a fabric.
Table 28 Database size rules for B-series Fibre Channel switches
Description
Rule
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number
Secure Fabric OS—With security enabled in a fabric, the maximum security database size is as
follows:
• If the fabric contains any 1 Gb/s switches, the maximum size is 32 KB, with only 16 KB
active. The maximum number of DCC policies is 620.
• If the fabric contains 2 Gb/s or 4 Gb/s switches only, the maximum size is 128 KB, with
64 KB active.
• With Fabric OS 6.x, the maximum size is 1 MB.
This database, which stores DCC, SCC, and FCS policies, can support ACL security settings
for environments with up to 14,000 attached devices. This is not supported with the 4/16
SAN switch.
1
B-series switches and fabric rules110
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