https://community.netapp.com/t5/ONTAP-Discussions/NDMP-Environment-variable-DATA-BLOCK-SIZE-no-longer-supported/m-p/107578#M22245 <P>I don't see any referene to the NDMP environment variable "DATA_BLOCK_SIZE" in new Data OnTap docs <SPAN>(8.3 Tape Protection Guide )</SPAN>. &nbsp;However, when I open an NDMP connection to an OnTap 8.3 filer I do see this value in the list of default NDMP environment variables in the NDMP_CONFIG_GET_BUTYPE_INFO response. &nbsp;I was hoping that the NDMP server would return this back at the end of backups also.</P> Wed, 04 Jun 2025 23:42:36 GMT seggy 2025-06-04T23:42:36Z https://community.netapp.com/t5/ONTAP-Discussions/NDMP-Environment-variable-DATA-BLOCK-SIZE-no-longer-supported/m-p/107578#M22245 <P>I don't see any referene to the NDMP environment variable "DATA_BLOCK_SIZE" in new Data OnTap docs <SPAN>(8.3 Tape Protection Guide )</SPAN>. &nbsp;However, when I open an NDMP connection to an OnTap 8.3 filer I do see this value in the list of default NDMP environment variables in the NDMP_CONFIG_GET_BUTYPE_INFO response. &nbsp;I was hoping that the NDMP server would return this back at the end of backups also.</P> Wed, 04 Jun 2025 23:42:36 GMT https://community.netapp.com/t5/ONTAP-Discussions/NDMP-Environment-variable-DATA-BLOCK-SIZE-no-longer-supported/m-p/107578#M22245 seggy 2025-06-04T23:42:36Z