IBM DS8880 Thin Provisioning (Updated for Release 8.5)

An IBM Redpaper publication

Note: A new draft version of this publication is now available

Published 20 November 2017, updated 08 November 2018

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ISBN-10: 0748456373
ISBN-13: 9780748456376
IBM Form #: REDP-5343-01
(64 pages)

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Authors: Bert Dufrasne, Andre Coelho, Peter Kimmel, Connie Riggins


Ever-increasing storage demands have a negative effect on an organization's IT budget and complicate the overall storage infrastructure and management. Companies are looking at ways to use their storage resources more efficiently.

Thin provisioning can help by reducing the amount of unused storage that is typically allocated to applications or users. Now available for the IBM® DS8880 for Fixed Block (FB) and Count Key Data (CKD) volumes, thin provisioning defers the allocation of actual space on the storage system until the time that the data must effectively be written to disk.

This IBM Redpaper™ publication provides an overall understanding of how thin provisioning works on the IBM DS8880. It also provides insights into the functional design and its implementation on the DS8880 and includes illustrations for the configuration of thin-provisioned volumes from the DS GUI or the DS CLI.

This edition applies to DS8880 Release 8.5 or later.

Table of contents

Chapter 1. Thin provisioning
Chapter 2. Planning considerations and guidelines
Chapter 3. Space-efficient volumes in the DS8880
Chapter 4. DS GUI and DS CLI support for thin provisioning
Chapter 5. Managing and monitoring thin-provisioned volumes
Chapter 6. Use of thin-provisioned volumes in z/OS

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