What is VRAH?

Hello Hyunwoo,

A VRA Helper is a VM linked to a VRA, which provides additional available SCSI targets.
A VRA Helper does not have an OS and therefore does not have an IP address or use VMware tools.
A VRA Helper is created proactively at the target site and prior to the target VRA reaching the SCSI target limit. Normally, once a VRA or a Helper reaches 50 attached volumes, the ZVM will create and deploy a new VRA helper.
Similar to a VRA, a VRA Helper must be left to Zerto Virtual Replication to manage, and must not be modified for any reason.

Hi Hyunwoo,

60 is correct, and VRA-Hs are spun up and down by Zerto automatically when nearing(not exactly) the 60-disk limit of the VRA or the last VRA-H.

Hallo Iris Z,
its possible to delete VRA-H? what effect will happen when vra-h is deleted?

Hello Angga,

This is Konstantin S. from Zerto support.

Please note that deleting a helper (Z-VRAH) will cause the VRA to go into a ghost status which will impact your replication. The helpers are automatically cleaned up once they’re not needed (after 24 hours)

In addition, please note that starting at 8.5, the helpers are getting spawned regardless of the number of SCSI slots busy on the VRA.

More info can be found in the KB article via the link below:
https://help.zerto.com/kb/000004577