Loading

×Sorry to interrupt
CSS Error

Refresh

Cookie Preference Center

General Information on cookies

When you visit our website, we use cookies to ensure that we give you the best experience. This information does not usually directly identify you, but it can give you a more personalized web experience. Because we respect your right to privacy, you can choose not to allow some types of cookies by clicking on the different category headings to find out more and change your settings. However, blocking some types of cookies may impact your experience on the site and the services we are able to offer. Further information can be found in our

Cookie Policy.

Strictly Necessary

Strictly Necessary

Always Active

Strictly Necessary

Strictly necessary cookies are always enabled since they are essential for our website to function. They enable core functionality such as security, network management, and website accessibility. You can set your browser to block or alert you about these cookies, but this may affect how the website functions. For more information please visit www.aboutcookies.org or www.allaboutcookies.org.

Cookie Details‎

Performance

Performance

Performance

Performance cookies are used to analyze the user experience to improve our website by collecting and reporting information on how you use it. They allow us to know which pages are the most and least popular, see how visitors move around the site, optimize our website and make it easier to navigate.

Cookie Details‎

Please confirm your settings by refreshing the page.

Functional

Functional

Functional

Functional cookies help us keep track of your past browsing choices so we can improve usability and customize your experience. These cookies enable the website to remember your preferred settings, language preferences, location and other customizable elements such as font or text size. If you do not allow these cookies, then some or all of these services may not function properly.

Cookie Details‎

Advertising

Advertising

Advertising

Advertising cookies are used to send you relevant advertising and promotional information. They may be set through our site by third parties to build a profile of your interests and show you relevant advertisements on other sites. These cookies do not directly store personal information, but their function is based on uniquely identifying your browser and internet device.

Cookie Details‎

Advertising Cookies

Consent Leg.Interest

Select All Vendors

Select All Vendors

Select All Hosts

Select All

Clear Filters

Information storage and access

Apply

Confirm My Choices Reject All Allow All

My Subscriptions

Loading

Knowledge Base

Maximum number of supported paths reached (1020654)

Last Updated: 2/28/2024Categories: InformationalTotal Views: 40330Language:
Chinese (Simplified)JapaneseEnglish

Subscribe to get an email
newsletter with new updates

Please provide article feedback:

Details

Symptoms

The ESXi host system fails to report a physical path to storage.

The maximum number of supported paths 1024 has been reached.

If an ESXi host does not detect all the paths to the SAN, more than 1024 physical paths might be connected.

You see this messages similar to:

The maximum number of supported paths of 1024 has been reached. Path vmhba2:C0:T0:L3 could not be added. The number of paths allocated has reached the maximum: 1024. Path: vmhba5:C0:T6:L28 will not be allocated. This warning won't be repeated until some paths are removed.

In the /var/log/vmkernel.log file of the ESXi host, you see entries similar to:

WARNING: Number of devices allocated has reached the maximum: 1024. Device will not be allocated.

Impact

Storage paths that are discovered after the first 1024 are not added to the system. You will not have access to some of the storage paths, and possibly some storage devices, that are configured to be accessible by the system.

Solution

To resolve this issue, reconfigure the storage attached to the ESXi host so that the total number of physical paths to storage is limited to 1024. For more information, see VMware Configuration Maximums.

To add more LUNs

Examine the LUNs the host has access to and identify the LUNs that it is not required to see.

Unpresent these LUNs.

Unmask the LUNs from ESX/ESXi before unpresenting them. For more information, see Masking a LUN from ESX and ESXi using the MASK_PATH plug-in (1009449).

Identify whether data on certain LUNs can be consolidated on to one LUN. Ensure that you use Storage vMotion or cold migration to move the data off a LUN if you are planning to consolidate data on to one LUN. You can then unpresent the LUNs from the host whose data has been consolidated.

Verify that the number of paths you have per LUN and whether you can reduce the number of paths, making sure that you do not compromise on both the HBA and the switch and controller.

Also, run this command on the ESXi host as root to view the number of LUNs seen by the VMkernel:

esxcli storage core device list |grep -E "^naa|^eui|^mpx|^t10" |wc -l

Detectable by VMware SkylineTM

Actions

Copy

link to clipboard
copied!

Print

Language:
Chinese (Simplified)JapaneseEnglish

Attachments

Additional Resources

KB
•
End Of General Availability of the Free vSphere Hypervisor (ESXi 7.x and 8.x) (2107518)

KB
•
Download and Install VMware Fusion (2014097)

Results 1-2 of 2

Ask The Community

Get answers quickly from VMware experts in the community

Post Subject

CONTINUE IN COMMUNITIES

Related Products:

VMware vSphere ESXi

Related Versions:

VMware vSphere ESXi 7.0.0

VMware vSphere ESXi 6.7

VMware vSphere ESXi 6.5

VMware vSphere ESXi 6.0

Take Our Survey

Support Assistant