HP StorageWorks 2/140 FW 08.01.00 HP StorageWorks Director and Edge Switch Rel - Page 16

gured in Homogeneous Fabric Interoperability, rst-generation Edge Switch 2/12

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Upgrades and downgrades are supported only from one major release to the next, such as from 07.xx.xx to 08.01.00. If HAFM Basic is used for upgrades and downgrades, and this rule is not followed, errors occur and there may be a disruption to attached devices. Downgrading to release 06.xx.xx with the Preferred Path feature configured can cause loss of this function. HP recommends that Preferred Path be disabled before downgrading. To do this, deselect the Enable Preferred Path check box in the Configure Preferred Paths dialog box. NOTE: The Director 2/140, Director 2/64, and Edge Switch 2/24 cannot be downgraded to a version earlier than 04.01.00, and the Edge Switch 2/12 cannot be downgraded to a version earlier than 05.05.00. Downgrades directly to 05.03.01 from 06.xx.xx are not concurrent when the second-generation Edge Switch 2/24 is configured in Open Fabric operating mode. In other words, downgrades in Open Fabric mode cannot be done with the second-generation Edge Switch 2/24 online without disrupting port operations. Since second-generation Edge Switch 2/24 switches cannot be downgraded to a version earlier than 05.03.01, they must be configured in Homogeneous Fabric Interoperability mode to remain concurrent. If this process is not followed, I/O through the switch may be significantly disrupted or stopped. Recovery for this situation is accomplished by reactivating the current zone set. If you are installing a new or replacement second-generation Edge Switch 2/12 or Edge Switch 2/24 in an existing 05.xx.xx fabric, HP recommends that you downgrade the unit before installation. Downgrading to 05.05.00 is supported only on first-generation Edge Switch 2/12 switches. Second-generation Edge Switch 2/12 switches can be downgraded only to 05.05.01. Second-generation Edge Switch 2/24 switches can be downgraded only to 05.03.01. If a Director 2/140 in a multiswitch fabric is downgraded to a version earlier than 06.02.00, ISLs can become segmented if there are any other switches in the fabric operating with a firmware version earlier than 06.01.00. To prevent this situation, downgrade all Director 2/140s in the fabric to 06.01.00 before downgrading any products in the fabric to 05.xx.xx. This problem only exists with Director 2/140s in the fabric. HAFM displays a warning message if a downgrade from 06.02.00 is attempted, but you can continue with the downgrade if desired. NOTE: The warning message is displayed when downgrading any model from 06.02.00, but only applies to downgrade operations for the Director 2/140. 14

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Upgrades and downgrades are supported only from one major release to the next, such
as from 07.xx.xx to 08.01.00. If HAFM Basic is used for upgrades and downgrades, and
this rule is not followed, errors occur and there may be a disruption to attached devices.
Downgrading to release 06.xx.xx with the Preferred Path feature con
fi
gured can
cause loss of this function. HP recommends that Preferred Path be disabled before
downgrading. To do this, deselect the
Enable Preferred Path
check box in the Con
fi
gure
Preferred Paths dialog box.
NOTE:
The Director 2/140, Director 2/64, and Edge Switch 2/24 cannot be downgraded to
a version earlier than 04.01.00, and the Edge Switch 2/12 cannot be downgraded to
a version earlier than 05.05.00.
Downgrades directly to 05.03.01 from 06.xx.xx are not concurrent when the
second-generation Edge Switch 2/24 is con
fi
gured in Open Fabric operating
mode. In other words, downgrades in Open Fabric mode cannot be done with the
second-generation Edge Switch 2/24 online without disrupting port operations. Since
second-generation Edge Switch 2/24 switches cannot be downgraded to a version
earlier than 05.03.01, they must be con
fi
gured in Homogeneous Fabric Interoperability
mode to remain concurrent. If this process is not followed, I/O through the switch may
be signi
fi
cantly disrupted or stopped. Recovery for this situation is accomplished by
reactivating the current zone set.
If you are installing a new or replacement second-generation Edge Switch 2/12 or Edge
Switch 2/24 in an existing 05.xx.xx fabric, HP recommends that you downgrade the
unit before installation.
Downgrading to 05.05.00 is supported only on
fi
rst-generation Edge Switch 2/12
switches. Second-generation Edge Switch 2/12 switches can be downgraded only to
05.05.01. Second-generation Edge Switch 2/24 switches can be downgraded only
to 05.03.01.
If a Director 2/140 in a multiswitch fabric is downgraded to a version earlier than
06.02.00, ISLs can become segmented if there are any other switches in the fabric
operating with a
fi
rmware version earlier than 06.01.00. To prevent this situation,
downgrade all Director 2/140s in the fabric to 06.01.00 before downgrading any
products in the fabric to 05.xx.xx. This problem only exists with Director 2/140s in the
fabric. HAFM displays a warning message if a downgrade from 06.02.00 is attempted,
but you can continue with the downgrade if desired.
NOTE:
The warning message is displayed when downgrading any model from 06.02.00, but
only applies to downgrade operations for the Director 2/140.
14