There is wrong assumption that all HP servers are affected due to this bug. HP cciss driver is very old and used to be only for G1/G2/G3/G4 series of server which HP does not support anymore.
While all HP latest servers starting from G5/G6/G7/Gen8 and Gen9 have hpsa driver which gives the device name as sda/sdb etc.. rather than cciss. And Canonical certify those servers with MAAS and Trusty which uses hpsa driver rather than cciss driver.
There is wrong assumption that all HP servers are affected due to this bug. HP cciss driver is very old and used to be only for G1/G2/G3/G4 series of server which HP does not support anymore.
While all HP latest servers starting from G5/G6/G7/Gen8 and Gen9 have hpsa driver which gives the device name as sda/sdb etc.. rather than cciss. And Canonical certify those servers with MAAS and Trusty which uses hpsa driver rather than cciss driver.