Difference Between San Device Virtualization And Flexattach Port Virtualization - Cisco AP775A - Nexus Converged Network Switch 5010 Configuration Manual

Chapter 14 Configuring FlexAttach Virtual pWWN
S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m
In the Replace Server wizard, click the With Spare Server on a Different NPV switch radio button.
Step 2
Click Next.
Step 3
The Failed Server Port window is displayed.
In the Failed Server Port selection window, from the Select a Switch drop-down list, select the switch.
Step 4
From the list of interfaces displayed, select the port from which the server needs to be detached.
Step 5
Click Next.
Step 6
The New Port window is displayed.
In the New Port selection window, select the switch and the port on which the spare server is connected.
Step 7
Click Next.
Step 8
The Server WWN window is displayed.
In the Server WWN window displayed, enter the existing FlexAttach server virtual port WWN to be
Step 9
replaced, and the new server physical port WWN.
Check the Allow wizard to change from "pWWN to vPWWN" mapping to "interface to vPWWN"
Step 10
mapping check box to remove the pWWN to vPWWN entry from the CFS Region mapping table, and
configure the mapping only at the interface.
Click Finish to complete the FlexAttach configuration for the spare server.
Step 11
Difference Between San Device Virtualization and FlexAttach
Port Virtualization
Table 14-2
virtualization.
Table 14-2 Difference Between SDV and FlexAttach Virtualization
SAN Device Virtualization (SDV)
Facilitates target and disk management, and only
facilitates disk and data migration.
WWN NAT and Fibre Channel ID (FC-ID) are
allocated on the virtual device, both primary and
secondary.
FC-ID rewrite on the switch indicates a
rewrite-capable switch on the path.
Configuration is distributed. This allows
programming rewrites and connectivity
anywhere.
Configuration is secured to device alias.
Does not allow automapping to the secondary
device.
OL-17256-03, Cisco MDS NX-OS Release 4.x

Difference Between San Device Virtualization and FlexAttach Port Virtualization

(Figure
describes the difference between SAN device virtualization (SDV) and FlexAttach port
(Figure 14-19)
14-16)
(Figure 14-21)
FlexAttach Virtualization
Facilitates server management and has no
restriction on the end devices used.
WWN and Network Address Transport (NAT) is
allocated to host bus adapter (HBA).
No rewrite requirements.
Configuration distribution is not required for any
of the interface-based configurations.
Does not require device alias for virtual pWWN.
Allows automapping to the new HBA. Mapping
process is manual for NPIV.
Cisco MDS 9000 Family Fabric Manager Configuration Guide
14-23