Skip to main content
NetApp Response to Russia-Ukraine Cyber Threat
In response to the recent rise in cyber threat due to the Russian-Ukraine crisis, NetApp is actively monitoring the global security intelligence and updating our cybersecurity measures. We follow U.S. Federal Government guidance and remain on high alert. Customers are encouraged to monitor the Cybersecurity and Infrastructure Security (CISA) website for new information as it develops and remain on high alert.
NetApp Knowledge Base

How to perform a non-disruptive change between Active-Passive (RDAC) and ALUA host types on E-Series arrays connected to ONTAP 7-Mode systems

Last Updated:


Applies to

  • SAN
  • Data ONTAP 8.1 7-Mode
  • FlexPod
  • E-Series Controller Firmware 8.xx
  • V-Series


Starting with Data ONTAP 8.2.3, 'Data ONTAP (ALUA)' Host type (Host Operating System) is supported and recommended for use with NetApp E-Series storage arrays.
Note: In E-Series controller firmware 8.25 and later the Data ONTAP (RDAC) host type has been deprecated. The following procedure for changing the E-Series host type from RDAC to ALUA must be completed prior to upgrading to 8.25 and later.

This article describes a non-disruptive procedure to convert the host type on the NetApp E-Series array connected to Data ONTAP systems. Changing the host type without following the recommended procedure might cause disruption to Data ONTAP systems that are serving data.

You can use this non-disruptive procedure to perform the following for the E-Series arrays connected to the Data ONTAP system:

  • Switch existing configurations with DATA ONTAP (RDAC) host type to DATA ONTAP (ALUA) host type
  • Switch existing configurations with DATA ONTAP (ALUA) host type to DATA ONTAP (RDAC)  host type

Note: The term ‘Data ONTAP system’ in this article refers to V-Series systems and FAS systems with the capability of attaching to storage arrays.
On NetApp E-Series arrays, ALUA host type is supported from firmware version onwards.


Scan to view the article on your device

Registered NetApp customers get unlimited access to our dynamic Knowledge Base.

New authoritative content is published and updated each day by our team of experts.

Current Customer or Partner?

Sign In for unlimited access

New to NetApp?

Learn more about our award-winning Support