Hosting your own web site - Part 3: Windows Server 2003 Upgrades and Migrations
Part 3: Windows Server 2003 Upgrades and Migrations Upgrading to Windows Server 2003 Managing Disk Partitions Managing disk partitions in Windows NT differs from managing them in Windows Server 2003, and NTFS partitions are converted during installation (with backward compatibility supported for file allocation table [FAT] and FAT32 partitions). Even though only 1.5 GB of disk space is required for a new installation, a little more than 2 GB of disk space is required to upgrade (thus, you cannot upgrade Windows NT server installations on FAT partitions, because doing so exceeds the partition boundaries for the FAT partition). Windows NT 4 fault-tolerance configurations mirroring (redundant array of independent disks [RAID] 1) and disk striping with parity (RAID 5) are not supported by Windows Server 2003. Prior to upgrading Windows NT 4 servers that use these methods, verify you have a backup of the data contained on the fault- tolerant volumes, and then disable the fault- tolerant configuration. Windows NT disk partitions are now referred to as basic disk (meaning, not dynamic) partitions. Beginning in Microsoft Windows 2000 (and including Microsoft Windows XP and Windows Server 2003), the use of dynamic disk partitions became available. Dynamic disk partitions cannot be modified during upgrade. Upgrading Domain Controllers When you re ready to begin upgrading your Windows NT 4 domain controllers, after verifying that you can and want to upgrade the server hardware, begin the process by backing up your domain controllers and taking at least one updated BDC offline for the duration of the upgrade process. Keep this offline BDC as a rollback server in case of serious upgrade errors resulting in an inoperative primary domain controller (PDC). Depending upon the criticality of your existing domain infrastructure, you might want to have multiple backups set aside for rapid recovery of your existing network functionality. For the same reason that you make and keep redundant backup tapes, when upgrading domains it makes sense to keep redundant BDCs (at least long enough to verify a successful upgrade). . Upgrade the PDC To upgrade the Windows NT 4 domain controllers on your network, begin by upgrading the PDC and allow time to assess whether it has been upgraded correctly. . Upgrading BDCs After the PDC is upgraded, next upgrade all of the BDCs. Chapter 8
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