HP 9000 Series Service Manual page 465

HotSwap Disk Bay (D Class Only)
Manual HotSwap Procedure
Customers using manual hot swap on 10.01 Operating System, will need to pick up two
LVM patches to install on their system. There will be two documents included with every
Model D Class Enterprise server informing the customer of the patch and the manual
procedure.
With 10.10 Operating System or later, the LVM patches will be included in the OS.
Appendix C C-11