File_System_Migration

CDMS Overview
Configuration
This section contains configuration guidelines and helpful tips you
should consider before setting up an NFS or CIFS migration. It
describes configuration information common to protocols as well as
NFS- and CIFS-specific information.
Common The following configuration guidelines are common to NFS and CIFS
data migrations:
◆ The source file server must be read-only to prevent users from
having write or modify access from the client side.
◆ CDMS migrations can only be targeted to Migration File System
(MGFS) file systems on the Data Mover.
◆ The Perl package is 64-bit compatible.
NFS specific The following configuration guidelines are common to NFS data
migrations:
◆ If consolidating from multiple NFS source file servers that are not
covered by a common NIS, you should verify that GID numbers
and names are consistent on each source file server. Otherwise,
the ch_group.pl script might be needed after the migration to
change GID numbers, if they match another GID number in a
directory or subdirectory tree.
◆ Either the owner of each file must have read privileges on every
file within the file system, and execute privileges on all directories
to be migrated, or the Data Mover must have been granted root
access on the source file server export.
CIFS specific The following configuration guidelines are common to CIFS data
migrations:
◆ Data Mover security should be set to Windows NT mode for
CDMS migrations.
◆ The CIFS source file server must be set to read-only after share
migration has begun. The file system should be read-only for all
accounts except the account performing the migration. You can
remove the Access from Network privilege from the source file
server to prevent users from accessing the server.
26 VNX File System Migration Version 2.0 for NFS and CIFS User Guide 7.1