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Community Member

DC Promo a Unity 3.1 server down to member server

Hello everyone,

Here are my two questions. We have a Unity 3.1 server that was our first server installed in the network. It is an AD DC. We are going to upgrade this box to 4.0x and the first step I would like to acomplish is demote it to a member server. Any concern's with the demotion process? (Of course we have other DC's)

This machine also has a single 20Gb drive. Our hardware will only support 2 physical drives. Before the 3.x to 4.0x upgrade I would like to replace the single drive with mirrored 80GB drives. Any info taking a snapshot image of the existing drive and restoring it to the larger 80GB?

Thanks in advance for your replys.

6 REPLIES
Cisco Employee

Re: DC Promo a Unity 3.1 server down to member server

>>demote it to a member server

sure. just make sure your registry is pointing to the correct AD and GC servers

>>taking a snapshot image of the existing drive

Backup Exec is the only supported method. There are other software but as long as you understand the risks. Check to make sure the hardware will support the 80-gig drive.

Community Member

Re: DC Promo a Unity 3.1 server down to member server

Thank you

Gold

Re: DC Promo a Unity 3.1 server down to member server

Please take note that only the first DC in a forest is a GC. If you have not promoted another DC in the forest to be a GC you will need to ensure that you do before demoting the Unity server. Here is Microsoft documentation on how to do that:

http://support.microsoft.com/default.aspx?scid=kb;en-us;296882

Having Unity as a DC or DC/GC for your Windows network is not a supported configuration. Please ensure that after the rebuild Unity is not promoted again.

Also, the drive sizes that you are referencing are consistent with IDE drives. RAID with IDE drives is not supported on Unity whither it is hardware of software based. If you wish to have RAID you will need to purchase a server from our HCL that supports SCSI RAID. Here is the URL for that:

http://www.cisco.com/en/US/products/sw/voicesw/ps2237/products_data_sheet09186a008009267e.html

Here is the URL for pointing Unity to a new DC/GC:

http://www.cisco.com/en/US/products/sw/voicesw/ps2237/products_installation_and_configuration_guide_chapter09186a0080205a80.html

In 4.0(4) Unity will automatically re-point itself.

Also note that the MAPI profile which is stored in the registry also points to a static GC. To get this to update requires a reboot of the Unity server. This will also be dynamic in 4.0(4).

Thanks,

Keith

Community Member

Re: DC Promo a Unity 3.1 server down to member server

Thanks for the info on the GCatalogs. We have 2 other DC's with copies of the GC. As for our hardware, we have a MCS7825 74-2611-01US that shipped with a single 20GB IDE. We have hopes of adding some redundancy with larger mirrored drives. We have a case open with TAC to nail down our drive configuration options before we proceed.

Community Member

Re: DC Promo a Unity 3.1 server down to member server

You may want to also move your FSMO rolls off the server (if any). Otherwise you may have to sieze the FSMO roles later.

Gold

Re: DC Promo a Unity 3.1 server down to member server

This post is a little late but just to be clear that there aren't any options with that server. Both IDE and software RAID is 100% not supported.

Thanks,

Keith

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