Hub/Switch Installation Guide

Chapter 2 HPSS Planning

40 September 2002 HPSS Installation Guide

Release 4.5, Revision 2

that are introduced into your HPSS system. For example, if you plan to use HPSS to backup all of

thePCs inyour organization,itwouldbebesttoaggregatetheindividualﬁlesintolargeindividual

ﬁles before moving them into the HPSS name space.

The following planning steps must be carefully considered for the HPSS infrastructure

conﬁguration and the HPSS conﬁguration phases:

1. Identifythesite’s storage requirementsand policies,such astheinitial storagesystemsize,

anticipated growth, usage trends, average ﬁle size, expected throughput, backup policy.

and availability. Formore information, see Section 2.2: RequirementsandIntendedUsagesfor

HPSS on page 43.

2. Deﬁne the architecture of the entire HPSS system to satisfy the above requirements.The

planning should:

◆ Identify the nodes to be conﬁgured as part of the HPSS system.

◆ Identify the diskand tape storagedevices to be conﬁgured as partof the HPSS system

andthe nodes/networkstowhicheachofthedevices willbe attached.Storage devices

can be assigned to a number of nodes to allow data transfers to utilize the devices in

parallel without being constrained by the resources of a single node. This capability

also allows the administrator to conﬁgure the HPSS system to match the device

performance with the network performance used to transfer the data between the

HPSS Movers and the end users (or other HPSS Movers in the case of internal HPSS

data movement for migration and staging). Refer to Section 2.4 for more discussions

on the storage devices and networks supported by HPSS.

◆ Identify the HPSS subsystems to be conﬁgured and how resources will be allocated

among them. Refer toSection2.7:StorageSubsystemConsiderationsonpage81for more

discussion on subsystems.

◆ IdentifytheHPSSservers tobe conﬁguredand thenode whereeach ofthe servers will

run.RefertoSection2.6:HPSS ServerConsiderationson page62formorediscussionson

the HPSS server conﬁguration.

◆ Identify the HPSS user interfaces (e.g.FTP, PFTP, NFS,XFS, DFS)to be conﬁgured and

the nodes where the components of each user interface will run. Refer to Section 2.5:

HPSS Interface Considerations on page 58 for more discussion on the user interfaces

supported by HPSS.

3. Ensure that the prerequisite software has been purchased, installed, and conﬁgured prop-

erly in order to satisfy the identiﬁed HPSS architecture. Refer to Section 2.3: Prerequisite

SoftwareConsiderations onpage 46formore information on the HPSS prerequisite software

requirements.

4. Determine the SFS space needed to satisfy the requirements of the HPSS system. In addi-

tion,verifythatthereissufﬁcient diskspaceto conﬁgurethespace neededby SFS.Refer to

Section2.10.2:HPSSMetadataSpaceonpage106formorediscussionsofSFSsizingrequired

by HPSS.

5. Verify that each of the identiﬁed nodes has sufﬁcient resources to handle the work loads

and resources to be imposed on the node. Refer to Section 2.10.3: System Memory and Disk

Space on page 132 for more discussions on the system resource requirements.