• Replacement disks have to be attached to the same host bus adapter on the same
bus.
• The boot partition (on which the DR OS is installed) must be larger than 200 MB
or disaster recovery will fail. If you enabled the Compress drive option to save
disk space option on the original partition, you must have 400 MB free.
• During the EADR preparation, the partition on which Data Protector is installed
should have at least 200 MB of temporary free space. This space is required to
create a temporary image.
• All drivers required for boot must be installed under %SystemRoot% folder. If
not, they must be specified in the file kb.cfg. See “Editing the kb.cfg
file” on page 107.
• Network must be available when you boot the system in Safe Mode with
Networking or in Directory Services Restore Mode (Domain Controller only), but
you must perform the backup of the system after it was booted with the normal
boot process.
• The system’s BIOS must support bootable CD extensions as defined in the El-Torito
standard and read/write access to hard disk drive using LBA addressing via
INT13h function XXh. The BIOS options can either be checked in the user’s
manuals of the system or by inspecting the system setup before the boot.
• When backing up the client, the default 64 kB block size should be used to write
to the device if you plan to perform an offline restore. This is the only default block
size available on Windows when performing disaster recovery. To verify that the
default 64 kB block size is set, choose Advanced in the Properties box, as shown
in Figure 2 on page 58.
Disaster recovery guide 57
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