I have a strange requirement from my customer. He wants to have his CCM installed in such a way that he has one version of the software installed on one partition on the disk, but when he makes an upgrade, that the upgrade is done on other partition, leaving the first one intact (for backup I suppose??). Can anything like this be done? Only thing that crosses my mind is to pull out one of the mirrored disks and perform upgrade on the other one, leaving the first one as backup. His requirement seems absurd, but I have to respond on this as either being possible or not.
well, the other way is indeed possible and guides recommend it but back at TAC those were a real headache since many, many times something failed when pulling and inserting drives. the official position is that it should be avoided but they have never taken that out from guides. now with linux versions it's not necessary but still the info is on the guides for windows versions
if they want a backup simply use BARS or DRS for that purpose.
By default, when you do an upgrade, the server installs the upgraded sotware into a new partition called the inactive partition. After your upgrade , you can then choose to switch to the new partion which contains your upgraded CCMor the server can automatically switch over for you if you select the option during your upgrade.
This features gives you the flexibility of a roll back should there be any major problems with the upgrade.
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