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https://blogs.vmware.com/vsphere/2012/02/configuration-settings-for-alua-devices.html
Feb 03, 2012 · explicit_support: Shows whether or not the device supports explicit ALUA; this option cannot be set by the user as it is a property of the LUN. explicit_allowed: Shows whether or not the user allows the SATP to exercise its explicit ALUA capability if the need arises during path failure. This only matters if the device actually supports ...
https://docs.vmware.com/en/VMware-vSphere/6.5/com.vmware.vsphere.storage.doc/GUID-DB5BC795-E4D9-4350-9C5D-12BB3C0E6D99.html
Storage Array Type Plug-ins (SATPs) are responsible for array-specific operations. The SATPs are submodules of the VMware NMP. ESXi offers an SATP for every type of array that VMware supports. ESXi also provides default SATPs that support non-specific active-active, active-passive, ALUA, and local devices.. Each SATP accommodates special characteristics of a certain class of storage arrays.
https://www.dell.com/community/Compellent/Dell-Compellent-Firmware-6-7-and-vSphere/td-p/4752302
The ALUA protocol was designed for arrays that VMware classifies as Asymmetrical Storage Systems. Historically, since the Storage Center is considered an Active-Active storage system where all the paths are active at all times (unless a path failed), ALUA was not necessary.
http://www.yellow-bricks.com/2009/09/29/whats-that-alua-exactly/
Sep 29, 2009 · First of all ALUA stands for “Asymmetric Logical Unit Access”. As Chad explains and as a google search shows it’s common for midrange arrays these days to have ALUA support. With midrange we are talking about EMC Clariion, HP EVA and others.
https://docs.vmware.com/en/VMware-vSphere/6.7/com.vmware.vsphere.storage.doc/GUID-DB5BC795-E4D9-4350-9C5D-12BB3C0E6D99.html
Storage Array Type Plug-ins (SATPs) are responsible for array-specific operations. The SATPs are submodules of the VMware NMP. ESXi offers an SATP for every type of array that VMware supports. ESXi also provides default SATPs that support non-specific active-active, active-passive, ALUA, and local devices.. Each SATP accommodates special characteristics of a certain class of storage arrays.
https://communities.vmware.com/thread/617879
Sep 06, 2019 · Hi, When using an iSCSI Active/Passive (standby, ALUA access state 0x2) dual node ALUA compatible storage array, ESXi always treats the secondary, standby path as an Active/Optimized path, where I would have expected the path to show as inactive/dead/non optimized.
https://library.netapp.com/ecmdocs/ECMP12404601/html/GUID-6750734C-700B-46CD-A886-F3CE373C5CB3.html
Starting with ESXi 5.0 U1 and ESXi 4.1 U3, VMware automatically has the claim rules to select the VMW_SATP_ALUA plug-in to manage storage arrays that have the target port group support (TPGS) bit enabled. All arrays with the TPGS bit disabled are still managed by the VMW_SATP_LSI plug-in.
https://www.vmware.com/support.html
Get support for VMware desktop, application and data center virtualization. Search Knowledgebase. Download virtualization products and patches
https://www.vmware.com/resources/compatibility/search.php?deviceCategory=san
Technical support for VMware products is available online or by phone depending on your support offering.. Self-service, web-based support resources such as the Knowledge Base and VMware Communities are also available ...
https://drewtonnesen.wordpress.com/2018/04/06/alua-and-mobility-id-on-vmax/
Apr 06, 2018 · A recent interaction with a customer led to this blog post concerning the Mobility ID that we support for VMAX devices and the multipathing policy of ALUA (Asymmetrical Logical Unit Access). Mobility devices are the only ones that support ALUA on the VMAX. ALUA multipathing is typically associated with non-VMAX arrays like the former Clariion…
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