Enhancements in 5.1.0-SP40

Updated on Jan 30, 2026
Published on Jan 28, 2026

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Article summary

Tenant Client IP Ranges

ORION-178951, ORION-195263, ORION-194742: Increased the maximum number of allowed client IP ranges per tenant up to 1000. Each range can have up to 65535 IPs.

SMB

ORION-175831: Added an ability to disable SMB leases (client cache) per lease type: read leases, write leases, handle leases.
You can disable SMB leases in view policy settings. The following user controls have been added for this feature:
- In VAST Web UI, in the SMB tab of view policy settings (Element Store -> View Policies -> choose to create or edit a view policy):
  - Disable client leases pane lets you disable Handle leases, Read leases and/or Write leases
- In VAST CLI, the following options on viewpolicy create and viewpolicy modify commands:
  - --disable-read-lease
  - --enable-read-lease
  - --disable-write-lease
  - --enable-write-lease
  - --disable-handle-lease
  - --enable-handle-lease
- In VAST REST API, the following parameters (boolean) for the /viewpolicy/ endpoint:
  - disable_read_lease
  - disable_write_lease
  - disable_handle_lease

ORION-195984: Added an ability to supply a well-known SID when setting a share-level ACL; for example:

view modify --id 3 --enable-share-acl --share-ace-grantee groups --share-ace-identifier S-1-5-11
    --share-ace-permissions READ

VMS

ORION-204295: Added an alarm to be raised when a NIC cable is frequently changing its state from up to down and back to up, which can be indicative of a jittering cable.

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