Table of Contents
Advertisement
Figure 17-1 shows how data is actually transferred on a Storage Area Network
during server-free backup/restore.
Client
Data
Figure 17-1 Server-free data movement
Operations for server-free backup/restore are done in the following order:
1. The Tivoli Storage Manager client initiates the backup or restore request.
2. The Tivoli Storage Manager Server issues a mount request to the library.
3. The datamover initiates a copy operation.
4. The data is copied between the disk and the tape library.
Server-free operations transfer only volume images, not standard, file-level data.
If the client cannot perform a server-free backup or restore, the operation first
fails over to LAN-free operation. If a LAN-free operation cannot be performed,
the client attempts a LAN-based backup or restore. Server-free operation can
restore LAN-free or LAN-based volume image backups. (The image data should
be stored in storage pools with a data format of NONBLOCK.) Currently,
server-free image backup is supported for Windows 2000 clients only. Image
backup of both raw volumes and volumes that contain NTFS file systems are
supported. Tivoli Storage Manager supports both online and offline image
backup using server-free data movement.
LAN/W AN (TCP/IP)
SAN
FC Device
Data M over
Chapter 17. Server-free data movement
Backup
Server
Tape
Data Flow
Control Flow
567
Advertisement
Table of Contents
