This is an enhancement request to enable Data Protector to support to have the default settings in omnirc changed from:
# Specifies if checksum values are created for data packets
# CATALYST_PAYLOAD_CHECKSUM:<1-ENABLE/0-DISABLE>
#CATALYST_PAYLOAD_CHECKSUM:1
# Specifies if messages are compressed between client and server
# CATALYST_BODY_PAYLOAD_COMPRESSION:<1-ENABLE/0-DISABLE>
#CATALYST_BODY_PAYLOAD_COMPRESSION:1
to
# Specifies if checksum values are created for data packets
# CATALYST_PAYLOAD_CHECKSUM:<1-ENABLE/0-DISABLE>
#CATALYST_PAYLOAD_CHECKSUM:0
# Specifies if messages are compressed between client and server
# CATALYST_BODY_PAYLOAD_COMPRESSION:<1-ENABLE/0-DISABLE>
#CATALYST_BODY_PAYLOAD_COMPRESSION:0
Enabling compression and checksums will add some overhead and will slow the backup down.
HPE recommends using Enabled values only in WAN environment:
CATALYST_PAYLOAD_CHECKSUM
When StoreOnce Catalyst data payloads are transferred, a StoreOnce Catalyst payload checksum is created to ensure data integrity. This checksum is only required for WAN-based transfers where network layer checksums are insufficient. LAN and Catalyst over Fibre Channel backup have sufficient checksum capabilities.
Set to Enable for WAN environments and Disable for LAN/Catalyst over Fibre Channel.
CATALYST_BODY_PAYLOAD_COMPRESSION
StoreOnce Catalyst data payloads can be compressed when they are transferred. Compression is beneficial for WAN-based transfers where bandwidth is often limited but compression is not necessary for LAN and Catalyst over FibreChannel data transfers.
Set to Enable for WAN environments and Disable for LAN/Catalyst over Fibre Channel.
In omnirc file parameters CATALYST_PAYLOAD_CHECKSUM and CATALYST_BODY_PAYLOAD_COMPRESSION have the value Enable by default.
Since these parameters are not described in the user manual for Data Protector and most users are not familiar with it, then I think that the default values should follow the HPE recommendations.
Similar enhancement request (QCCR2A71860) has been implemented in Patch Release: DP-9.07_110.
