Date – 06/11
Affected Product & Version – NetVault Backup 8.x
Affected Module & Version – all
OS Version – HP-UX 11i v3, March 2011 release
Application Information – n/a
Patch PHKL_41700 introduced a regression error causing additional wait time for all network timeout operations. NetVault backups over network are greatly affected by this, leading to much slower backup speeds than expected.
PHKL_41700 is an fs_select cumulative patch, provided by the Feature Enablement Bundle
(B.11.31.1103.361b) which is part of the HP-UX 11i v3, March 2011 release
After an update to HP-UX 11i v3, March 2011 release (specifically the fs_select patch PHKL_41700), or installing NetVault onto a system running this release of HP-UX, LAN backups slow to speeds around 1.5MB/sec/
At time of writing, HPs recommended level for fs_select is PHKL_38700, not PHKL_41700. To avoid this issue in the first place, do not install PHKL_41700 when updating HP-UX 11i v3, March 2011 release. If PHKL_41700 has already been installed, tune the 'hires_timeout_enable' kernel parameter to 1. Run the following command to set this variable to 1:
# kctune hires_timeout_enable=1
NOTE: HP is likely to deliver the resolution for this issue post the March 2011 release.
BakBone SFDC Solution Number: 00006312