Release Notes

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24
)Cisco MDS 9000 Family Release Notes for Cisco MDS NX-OS Release 5.0(1a)
OL-21012-01
Downgrading Your Cisco MDS SAN-OS Software Image
FICON Downgrade Paths
Table 16 lists the downgrade paths for FICON releases. Find the image release number that you want to
downgrade to in the To Release with FICON Enabled column of the table and follow the recommended
downgrade path.
Table 15 Nondisruptive Downgrade Path from NX-OS Release 5.0(1a)
To NX-OS or SAN-OS
Release Nondisruptive Downgrade Path and Ordered Downgrade Steps
NX-OS:
All 4.2(x) and 4.1(x)
releases
1. Downgrade directly from NX-OS Release 5.0(1a).
1
1. See Table 14 before you perform a software downgrade on a Cisco MDS 9509 or MDS 9506 switch.
Note For the nondisruptive upgrade from 4.2(7a), 4.2(7b), 4.2(7d), 4.2(7e), or 4.2(9) to 5.0(1a), slow
drain port-monitor must be disabled. Otherwise consider upgrading directly from 4.2(x) to
5.0(8a) which does not require slow drain port-monitor to be disabled.
SAN-OS:
All 3.3(x) releases
1. Downgrade to NX-OS Release 4.2(x) or Release 4.1(x).
2. Downgrade to SAN-OS Release 3.3(x).
All 3.2(x), 3.1(x),
3.0(x) releases, and all
2.1(x) releases.
1. Downgrade to NX-OS Release 4.2(x) or Release 4.1(x).
2. Downgrade to SAN-OS Release 3.3(x).
3. Downgrade to SAN-OS Release 3.2(x), Release 3.1(x)., Release 3.0(x), or
Release 2.1(x).
All 2.0(x) releases.
1. Downgrade to NX-OS Release 4.2(x) or Release 4.1(x).
2. Downgrade to SAN-OS Release 3.3(x).
3. Downgrade to SAN-OS Release 2.1(2x).
4. Downgrade to SAN-OS Release 2.0(x).
Release 1.x
1. Downgrade to NX-OS Release 4.2(x) or Release 4.1(x).
2. Downgrade to SAN-OS Release 3.3(x).
3. Downgrade to SAN-OS Release 2.1(2b).
4. Downgrade to SAN-OS Release 1.3(4a).
5. Downgrade to SAN-OS Release 1.x.