4 IBM ProtecTIER Implementation and Best Practices Guide
1.1 Terminology
The following terms and definitions are used in this publication and are common for all
products from the ProtecTIER family:
ProtecTIER When used by itself, this expression points to the IBM
patented deduplication solution based on
HyperFactor. Depending on the context, it can mean
the family of products, a specific device, or just the
deduplication engine.
TS7600 When used alone, this term signifies the IBM family of
virtualization solutions that operate on the ProtecTIER
platform, including the ProtectTIER appliances and
Factoring ratio The factoring ratio means the ratio of nominal capacity
as a sum of backup data streams to physical capacity
in the ProtecTIER repository. For example, if you have
100 TB of user data (nominal capacity) and it is stored
on 10 TB of physical capacity, your factoring ratio
is 10:1.
HyperFactor The IBM algorithm that eliminates data duplicates from
the incoming backup data streams. The factoring
ratios are the result of HyperFactor processing.
VTL The ProtecTIER VTL service emulates traditional tape
libraries. By emulating tape libraries, you can use
ProtecTIER VTL to transition to disk backup without
having to replace your entire backup environment.
Your existing backup application can access virtual
robots to move virtual cartridges between virtual slots
and drives. The backup application perceives that the
data is being stored on cartridges, but ProtecTIER
actually stores data on a deduplicated disk repository.
OST This configuration option allows ProtecTIER to be
integrated with Symantec NetBackup to provide a
backup-to-disk capability without using a VTL
emulation. Using a plug-in that is installed on an OST
enabled media server, you can use ProtecTIER to
implement a communication protocol that supports
data transfer and control between the backup server
and the ProtecTIER server. Therefore, to support the
plug-in, you use ProtecTIER to implement a storage
server emulation.
FSI-CIFS ProtecTIER emulates Windows file system behavior
and presents a virtualized hierarchy of file systems,
directories, and files to Windows CIFS clients. When
configured for FSI-CIFS, ProtecTIER emulates a
network-attached storage (NAS) backup target
capable of using both HyperFactor and ProtecTIER
Native Replication bandwidth reduction techniques for
storing and replicating deduplicated data. Common
Internet File System (CIFS) is supported.
Chapter 1. ProtecTIER basics 5
System console The system console used with the TS7650 Appliance
products is the IBM TS3000 System Console (TSSC).
Metadata Metadata is the data used to track the data about your
backup data, including where it is stored on the disk.
User data User data consists of the backup files and data sets
stored on the VTL. It is the data that you are storing on
Repository The repository is the physical disk that holds the
ProtecTIER factored data. There are two types of file
systems that make up the ProtecTIER Repository:
metadata and user data.
Front end The connection from ProtecTIER to the backup server.
Back end The connection from ProtecTIER to the attached disk
storage subsystem that acts as a repository.
Node and server A single ProtecTIER server (TS7650G, TS7650
Appliance, TS7610 Appliance Express, or TS7620
Appliance Express) is represented as a node from the
ProtecTIER Manager software. Stand-alone node or
dual-node cluster configurations are available. This
book uses the terms node and server interchangeably.
Shelf A container of VTL cartridges within a ProtecTIER
repository. This container is analogous to a shelf or a
rack where physical tapes are kept outside of the
automated tape library in cartridge slots.
IBM Tivoli Assist On-site (AOS) A web-based tool that enables a remote support
representative in IBM to view or control the
management node desktop. More information is at the
Tivoli AOS website at:
1.1.1 ProtecTIER Appliance terminology
The ProtecTIER Appliance is the IBM self-contained virtualization solution that includes an
embedded pre-configured disk storage repository. The following terms are specific to the
TS7650 Appliance:
Disk controller The disk controller for the TS7650 Appliance is the 4.8 TB Fibre
Channel Disk Controller (Feature Code 3708). Use this feature code
for ordering or service purposes.
Disk expansion unit The disk expansion unit for the TS7650 Appliance is the 4.8 TB Fibre
Channel Disk Expansion Unit (Feature Code 3707). Use this feature
code for service purposes.
Server The 3958 AP1 server is based on the IBM System x3850 X5 Type
7145-AC1with ProtecTIER Version 3.2. When used as a server in the
TS7650 Appliance, its machine type and model are 3958 AP1.

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