https://community.hpe.com/t5/general/hsz70-controller-firmware/m-p/3419660#M2515 I don't know what the patches are for, but you can expect changes in controller behaviour. That does not sound OK to me.<BR /><BR />I would update the unpatched controller. Wed, 10 Nov 2004 15:52:53 GMT Uwe Zessin 2004-11-10T15:52:53Z https://community.hpe.com/t5/general/hsz70-controller-firmware/m-p/3419659#M2514 I have a ppair of controller in a dual redundancy. One has a firmware patch V77Z-0 and the other is at V77Z-4. Will this cause anyproblems and is it okay to operate on different patch levels? Wed, 10 Nov 2004 15:13:59 GMT https://community.hpe.com/t5/general/hsz70-controller-firmware/m-p/3419659#M2514 Louann Duchemin 2004-11-10T15:13:59Z https://community.hpe.com/t5/general/hsz70-controller-firmware/m-p/3419660#M2515 I don't know what the patches are for, but you can expect changes in controller behaviour. That does not sound OK to me.<BR /><BR />I would update the unpatched controller. Wed, 10 Nov 2004 15:52:53 GMT https://community.hpe.com/t5/general/hsz70-controller-firmware/m-p/3419660#M2515 Uwe Zessin 2004-11-10T15:52:53Z