Hitachi 9900 Series User manual

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Hitachi Freedom Stora
g
e™
Lightning 9900™ V Series
LUN Expansion and Virtual LVI/LUN
User’s Guide

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Hitachi Lightning 9900™ V Series LUN Expansion and Virtual LVI/LUN User’s Guide iii
© 2002 Hitachi Data Systems Corporation, ALL RIGHTS RESERVED
Notice: No part of this publication may be reproduced or transmitted in any form or by any
means, electronic or mechanical, including photocopying and recording, or stored in a
database or retrieval system for any purpose without the express written permission of
Hitachi Data Systems Corporation.
Hitachi Data Systems reserves the right to make changes to this document at any time
without notice and assumes no responsibility for its use. Hitachi Data Systems products and
services can only be ordered under the terms and conditions of Hitachi Data Systems’
applicable agreements. All of the features described in this document may not be currently
available. Refer to the most recent product announcement or contact your local Hitachi
Data Systems sales office for information on feature and product availability.
This document contains the most current information available at the time of publication.
When new and/or revised information becomes available, this entire document will be
updated and distributed to all registered users.

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iv Preface
Trademarks
Hitachi Data Systems is a registered trademark and service mark of Hitachi, Ltd. The Hitachi
Data Systems design mark is a trademark and service mark of Hitachi, Ltd.
Hi-Track is a registered service mark of Hitachi Data Systems Corporation. Graph-Track,
Freedom Storage, Lightning 9900V are trademarks of Hitachi Data Systems Corporation.
VMS is a registered trademark of Compaq Computer Corporation. Tru64 is a trademark of
Compaq Computer Corporation.
Emulex is a registered trademark of Emulex Corporation. Lightpulse is a trademark of Emulex
Corporation.
HP-UX is a registered trademark of Hewlett-Packard Company.
S/390, AIX, and FICON, DYNIX/ptx and ESCON are registered trademarks of International
Business Machines Corporation.
JNI is a registered trademark of Jaycor Systems Inc.
Internet Explorer, Windows 95, Windows 98, Windows ME, Windows NT, Windows XP, and
Windows 2000 are trademarks or registered trademarks of Microsoft Corporation.
NetWare is a registered trademark of Novell, Inc.
IRIX is a registered trademark of Silicon Graphics, Inc.
Solaris, Java, Java Virtual Machine (JVM) and Java Runtime Environment (JRE) are
trademarks or registered trademarks of Sun Microsystems, Inc.
All other brand or product names are or may be registered trademarks, trademarks or
service marks of and are used to identify products or services of their respective owners.

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Hitachi Lightning 9900™ V Series LUN Expansion and Virtual LVI/LUN User’s Guide v
Notice of Export Controls
Export of technical data contained in this document may require an export license from the
United States government and/or the government of Japan. Contact the Hitachi Data
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Document Revision Level
Revision Date Description
MK-92RD104-P April 2002 Preliminary Release
Source Documents for This Revision
RSD- Vlm45d1b (February, 2002)
RSD- Vll45d0 (March, 2002)
RSD - Vll45d0a (April,2002)
Referenced Documents
Hitachi Lightning 9900V documentation referenced in this document:
 Hitachi Freedom Storage™ Lightning 9900™ V Series User and Reference Guide
(MK-92RD100)
 Hitachi Freedom Storage™ Lightning 9900™ V Series Remote Console – Storage Navigator
User’s Guide (MK-92RD101)
 Hitachi Freedom Storage™ Lightning 9900™ V Series LUN Manager User’s Guide
(MK-92RD104)
 Hitachi Freedom Storage™ Lightning 9900™ V Series FlashAccess User’s Guide
(MK-92RD102)

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vi Preface

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Hitachi Lightning 9900™ V Series LUN Expansion and Virtual LVI/LUN User’s Guide vii
Preface
This Hitachi Freedom Storage™ Lightning 9900™ V Series LUN Expansion Virtual LVI/LUN
User’s Guide provides instructions for using these options on the 9900V Remote Console,
using the web client Java™ applet program for the 9900V subsystem.
This user’s guide assumes that:
 The user has a background in data processing and understands direct-access storage
device (DASD) subsystems and their basic functions,
 The user is familiar with the Hitachi 9900V array subsystem, and the user is familiar with
the Windows NTor Windows2000 operating systems.
For further information on the 9900V Remote Console and Java™ applet, please refer to the
Hitachi Freedom Storage™ Lightning 9900™ V Series Remote Console – Storage Navigator
User’s Guide (MK-92RD100), or contact your Hitachi Data Systems account team.
For further information on the 9900V subsystem, please refer to the Hitachi Freedom
Storage™ Lightning 9900™ V Series User and Reference Guide (MK-92RD100), or contact your
Hitachi Data Systems account team.
Note: The term “9900V” refers to the entire Lightning 9900™ V Series subsystem family,
unless otherwise noted. The use of the Lightning 9900™ V Series Remote Console, the web
client Java™ applet and any other optional functions is governed by the terms of the
applicable license and other agreement(s) with Hitachi Data Systems.
Note: This product includes software developed by the Apache Group for use in the Apache
HTTP server project (http://www.apache.org/)
Microcode Level
This document revision applies to 9900V microcode versions 21-01-XX and higher.
COMMENTS
Please send us your comments on this document: [email protected].
Make sure to include the document title, number, and revision.
Please refer to specific page(s) and paragraph(s) whenever possible.
(All comments become the property of Hitachi Data Systems Corporation.)
Thank you!

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viii Preface

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Hitachi Lightning 9900™ V Series LUN Expansion and Virtual LVI/LUN User’s Guide ix
Contents
Chapter 1 Overview of LUN Expansion and Virtual LVI/LUN............................................................... 1
1.1 Overview of LUSE Operations ...................................................................1
1.2 Overview of Virtual LVI/LUN ....................................................................4
1.2.1 Virtual LVI/LUN Parameters ...........................................................4
1.2.2 Virtual LVI/LUN Size Calculation ......................................................9
1.2.3 SSID Requirements).................................................................... 10
Chapter 2 Preparing To Use LUN Expansion or Virtual LVI/LUN ...................................................... 11
2.1 Set Up the 9900V Subsystem and Remote Console PC(s) ................................. 11
2.2 Launch LUN Expansion or Virtual LVI/LUN .................................................. 11
2.3 Changing to Modify Mode ...................................................................... 13
Chapter 3 LUN Expansion (LUSE) Operations.................................................................................... 15
3.1 The LUSE/VLL Panel, LUSE Tab Components ............................................... 15
3.2 LUSE Operations................................................................................. 19
3.2.1 Creating a LUSE Volume .............................................................. 19
3.2.1.1 Creating a LUSE Volume From the LDEV Operation Detail .......... 19
3.2.1.2 Creating a LUSE Volume From the LDEV Table........................ 21
3.2.2 Releasing a LUSE Volume ............................................................. 23
3.2.3 Changing LUSE Capacities ............................................................ 25
Chapter 4 Virtual LVI/LUN (VLL) Operations....................................................................................... 27
4.1 The Virtual LVI/LUN Panels ................................................................... 27
4.1.1 LUSE/VLL Panel, VLL Tab ............................................................ 27
4.1.2 Set SSID Panel .......................................................................... 30
4.2 Virtual LVI/LUN Operations ................................................................... 32
4.2.1 Converting Logical Volumes to Space .............................................. 32
4.2.2 Creating VLL volumes ................................................................. 35
4.2.3 Deleting a VLL volume ................................................................ 40
4.2.4 Initializing a Virtual LVI/LUN Volume .............................................. 40
Chapter 5 Troubleshooting................................................................................................................... 45
5.1 Troubleshooting ................................................................................. 45
5.2 Calling the Hitachi Data Systems Technical Support Center ............................. 47
Glossary, Acronyms, and Abbreviations................................................................................................. 49

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x Contents
List of Figures
Figure 1.1 LUSE configuration ......................................................................... 3
Figure 1.2 Illustration of Virtual LVI/LUN Operations ............................................. 4
Figure 1.3 Volume Configuration ..................................................................... 6
Figure 2.1 Remote Console Main Panel, Information Tab........................................12
Figure 2.2 View Mode..................................................................................14
Figure 2.3 Mode Changing Confirmation Message .................................................14
Figure 2.4 Modify Mode................................................................................14
Figure 3.1 LUSE/VLL Main Panel, LUSE Tab ........................................................15
Figure 3.2 LDEV Information Outline Detail (From the LUSE/VLL Panel, LUSE Tab).........16
Figure 3.3 LDEV Detail Table (From the LUSE/VLL Panel, LUSE Tab) ..........................17
Figure 3.4 LDEV Operation Detail (From the LUSE/VLL Panel, LUSE Tab) ....................18
Figure 3.5 Set LUSE Confirmation Panel ............................................................20
Figure 3.6 Apply Confirmation Message.............................................................20
Figure 3.7 Cancel Confirmation Message ...........................................................20
Figure 3.8 Selecting Free LDEVs for LUSE Volume ................................................22
Figure 3.9 Set LUSE Volume Pop-Up Menu .........................................................22
Figure 3.10 Selecting LUSE Volume(s) To Be Released ............................................24
Figure 3.11 Release LUSE Volume Pop-Up Menu ....................................................24
Figure 3.12 Release LUSE Confirmation Panel ......................................................25
Figure 4.1 LUSE/VLL Panel, VLL Tab ................................................................27
Figure 4.2 Parity Group - LDEV Outline (From the LUSE/VLL Panel, VLL Tab) ...............28
Figure 4.3 LDEV Information Table (From the LUSE/VLL Panel, VLL Tab) ....................29
Figure 4.4 Set SSID Panel..............................................................................30
Figure 4.5 Volume to Space Pop-Up Menu..........................................................34
Figure 4.6 Volume to Space Confirmation Panel ..................................................34
Figure 4.7 Install CV Pop-Up Menu ..................................................................37
Figure 4.8 Install CV Panel (1)........................................................................37
Figure 4.9 Clear Pop-Up Menu........................................................................37
Figure 4.10 Install CV Panel (2)........................................................................38
Figure 4.11 Set SSID Panel (Installing VLL Volumes) ...............................................38
Figure 4.12 Install CV Confirmation Panel ...........................................................39
Figure 4.13 Volume Initialize Pop-Up Menu .........................................................42
Figure 4.14 Volume Initialize Panel...................................................................43
Figure 4.15 Clear Pop-Up Menu........................................................................43
Figure 4.16 Set SSID Panel (Volume Initialize) ......................................................44
Figure 4.17 Volume Initialize Confirmation Panel ..................................................44

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Hitachi Lightning 9900™ V Series LUN Expansion and Virtual LVI/LUN User’s Guide xi
List of Tables
Table 1.1 LUSE Specifications.........................................................................2
Table 1.2 VLL LUSE Specifications ...................................................................2
Table 1.3 Virtual LVI/LUN Specifications ...........................................................7
Table 1.4 Minimum and Maximum Virtual LUN Volume Capacities (Open Systems)..........8
Table 1.5 Control Cylinders/Control Area for Each LVI/LU Type................................8
Table 1.6 SSID Requirements........................................................................ 10
Table 4.1 Emulation Groups......................................................................... 29
Table 5.1 General Error Conditions ................................................................ 46

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xii Contents

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Hitachi Lightning 9900™ V Series LUN Expansion and Virtual LVI/LUN User’s Guide 1
Chapter 1 Overview of LUN Expansion and Virtual LVI/LUN
1.1 Overview of LUSE Operations
LUSE operations allow hosts that can only use a limited amount of LUs per fibre interface to
have access to larger amounts of data using expanded LUs. LUSE operations include the
following:
 Creating new expanded LUs (LUSE volumes) (see section 3.2).
 Releasing expanded LUs (LUSE volumes) to individual LUs (see section 3.2.2).
 Changing the size of a LUSE volume (see section 3.2.3).
The following guidelines apply to LUN Expansion:
 A maximum of 256 expanded LUs can be configured on the same port.
 LDEVs that are to be combined into LUSE volumes must have no assigned SCSI paths and
be unmounted from the host. These are known as free (or available) LDEVs. For
instructions on deleting SCSI paths, please see Hitachi Freedom Storage™ Lightning
9900™ LUN Manager User’s Guide (MK-92RD105).
 Combining non-sequential LDEVs into a LUSE is supported, provided they are on the same
CU.
 Combining Virtual LVI/LUN volumes into a LUSE is supported, provided they are the same
size and emulation type and on the same CU. The order of operations is important: you
must first create one or more Virtual LVI/LUN volumes, and then combine those volumes
into a LUSE volume. You cannot perform Virtual LVI/LUN operations on an existing LUSE
volume because a LUSE volume must have a SCSI path already specified.
 Combining Virtual LVI/LUN volumes and normal volumes into the same LUSE is not
supported.
 Combining command devices, Just In Time and CruiseControl volumes into a LUSE is not
supported.
 Combining RAID 1 and RAID 5 into the same LUSE is not supported.
 Combining emulation types (OPEN-3, OPEN-8, OPEN-9, OPEN-E, or OPEN-L) into the same
LUSE is not supported.
 Some operating systems may experience slow disk access times with large logical units,
if they contain a large number of high usage files.
 The size of a LUSE can affect the amount of time required to perform backups.
Note: The queue depth for open systems can vary, depending on the type of platform. Please
contact your Hitachi Data Systems Customer Support Center for assistance.
Warning: Except for systems running Windows NT®or Windows®2000, creating and releasing
expanded LUs is a destructive process. Be sure to back up your data before proceeding.

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2Chapter 1 Overview of LUN Expansion and Virtual LVI/LUN
Table 1.1 LUSE Specifications
Parameter OPEN-8 OPEN-9 OPEN-E OPEN-L
LU
Capacity
7.3 GB 7.3 GB 14.5 GB 36.4 GB
Possible
number of
expanded
LUs
2 - 36 LUs 2 - 36 LUs 2 - 36 LUs 2 - 36 LUs
Expanded
LU
Capacity
14.6 GB -
264.4 GB
14.7 GB -
265.8 GB
29.1 GB -
524.4 GB
72.9 GB -
1312.2 GB
Product
Name
OPEN-8*n
(n = # of
LUs in the
expanded
LU)
OPEN-9*n
(n = # of
LUs in the
expanded
LU)
OPEN-E*n
(n = # of
LUs in the
expanded
LU)
OPEN-L*n
(n = # of LUs
in the
expanded
LU)
Table 1.2 VLL LUSE Specifications
Parameter OPEN-3 OPEN-8 OPEN-9 OPEN-E
LU Capacity 35 MB - 2.4 GB 35 MB - 7.3 GB 35 MB - 7.3 GB 35 MB - 14.5 GB
Possible
number of
connected
LUs
2 - 36 LUs 2 - 36 LUs 2 - 36 LUs 2 - 36 LUs
Capacity of
expanded LUs
70 MB - 84.2 GB 70 MB - 250.2
GB
70 MB - 252.6
GB
70 MB - 524.4
GB
Product Name OPEN-3*n-VLL
(n = # of LUs in
the expanded
LU)
OPEN-8*n-VLL
(n = # of LUs in
the expanded
LU)
OPEN-9*n-VLL
(n = # of LUs in
the expanded
LU)
OPEN-E*n-VLL
(n = # of LUs in
the expanded
LU)
Note:Virtual LVI/LUN is not applicable to OPEN-L.

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Hitachi Lightning 9900™ V Series LUN Expansion and Virtual LVI/LUN User’s Guide 3
LDEV (1:00)
LDEV (1:01)
LDEV (1:03)
LDEV (1:04)
LDEV (1:05)
LUSE (1:00)
Host
The host recognizes a set
of LDEVs as one big LDEV.
Figure 1.1 LUSE Configuration

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4Chapter 1 Overview of LUN Expansion and Virtual LVI/LUN
1.2 Overview of Virtual LVI/LUN
1.2.1 Virtual LVI/LUN Parameters
The Virtual LVI/LUN (VLL) option allows you to configure variable-size volumes, which are
usually smaller than normal (fixed-size) volumes. Virtual LVI/LUN improves data access
performance by reducing logical device contention and host I/O queue times, particularly
when several frequently accessed files are located on the same volume. Virtual LVI/LUN
enables better utilization of the physical storage capacity of the 9900V, and reduces the
amount of administrative effort required to balance I/O workloads.
Virtual LVI/LUN allows you to perform the following types of operations:
 Converting a normal volume into free space (see section 4.2.1),
 Defining and installing a Virtual LVI/LUN (customized) volume (see section 4.2.2),
 Deleting a Virtual LVI/LUN volume (see section 4.2.3), and
 Initializing a Virtual LVI/LUN volume (see section 4.2.4).
Figure 1.2 illustrates the available Virtual LVI/LUN functions:
LDEV
LDEV
LDEV
LDEV
LDEV
Space
LDEV
LDEV
LDEV
LDEV
VLL
VLL
Volume to Space Install VLL
VLL volume
Normal Volume
Volume Initialize
Figure 1.2 Illustration of Virtual LVI/LUN Operations

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Hitachi Lightning 9900™ V Series LUN Expansion and Virtual LVI/LUN User’s Guide 5
Note: Virtual LVI/LUN used in conjunction with FlashAccess can achieve greater performance
improvements than when either of these options is used individually. For more information
on FlashAccess, see Hitachi Freedom Storage™ Lightning 9900™ V Series FlashAccess User’s
Guide (MK-92RD102).
A parity group is called a normal or fixed-size volume (FV) when all of its member LDEVs are
fixed-size. In a normal volume, the size of the member LDEVs is determined by type of
device that is being emulated, and the number of LDEVs is determined by the physical size
of the parity group.
Generally, each array group will have a certain amount of free space available after the
standard LDEVs for the array group have been defined. On the 9900V, Virtual LVI/LUN
formats one or more of the LDEVs on a selected volume into free space. That free space can
either be used to install one or more variable-sized volumes, or left as free space for future
use. Note: At least one LDEV must remain defined as a normal volume in each array group.
The following parameters apply to Virtual LVI/LUN operations:
 S/390®volumes must be offline from the host OS, and open volumes must be either
offline or unmounted from the host OS with no SCSI paths assigned to them. For more
information on configuring SCSI paths, please see Hitachi Freedom Storage™ Lightning
9900 TM V Series LUN Manager/SANtinel User’s Guide (MK-92RD104).
 Multiple LDEVs can be selected for conversion to Virtual LVI/LUN volumes but they must
be in the same parity group.
 When space in an LDEV is converted to a Virtual LVI/LUN volume, an LDEV address is
assigned to that Virtual LVI/LUN volume automatically. For mainframes, each Virtual
LVI/LUN volume will also have its own assigned unit control block (UCB). The UCB can be
assigned either automatically or manually, at the user’s option.
 LUSE, volumes secured by LUN Security, and Hitachi SANtinel – S/390®volumes are not
available for Virtual LVI/LUN operations, because these volumes must have SCSI paths
already defined. To create a VLL/LUSE volume, you must first create two or more Virtual
LVI/LUN volumes with the same size, emulation type and CU number, and then combine
those volumes into a LUSE device. For more information on creating LUSE devices see
Chapter 3.
 Virtual LVI/LUN operations are not available for OPEN-L volumes.
 When you convert a normal volume to a Virtual LVI/LUN volume, you can use all or part
of the space previously assigned to that volume (e.g., 3339 cylinders for a 3390-3) for
use in Virtual LVI/LUN volumes. Each array group can support a total of 256 volumes,
including both fixed-size and Virtual LVI/LUN volumes.
WARNING: The Virtual LVI/LUN function is destructive. Be sure to back up your data before
performing Virtual LVI/LUN operations.

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6Chapter 1 Overview of LUN Expansion and Virtual LVI/LUN
A normal volume consists of a certain number of fixed volumes, depending on the emulation
type, and some free space. A Virtual LVI/LUN volume usually consists of at least one fixed
volume (FV), customized volumes (CV or VLL volumes), and free space (see Figure 1.3).
FV
Space
FV
FV
CV
FV
FV
FV
Space
FV
FV
FV
FV
FV
Normal Configuration
Space
Sample Customized Volume Configuration
Figure 1.3 Volume Configuration

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Hitachi Lightning 9900™ V Series LUN Expansion and Virtual LVI/LUN User’s Guide 7
Table 1.3 lists the Virtual LVI/LUN specifications, and Table 1.4 lists the minimum and
maximum Virtual LVI/LUN volume capacities for open systems. Each Virtual LVI/LUN volume
has its own assigned unit control block (UCB), and multiple LVI/LUN types can be configured
within each Virtual LVI/LUN volume, so long as the device type is from the same device
family (e.g. all open volumes, or all 3390s). Open and 3390 volumes are not allowed in the
same parity group because they have different formats.
Table 1.3 Virtual LVI/LUN Specifications
Parameter Mainframe Open Systems
Track format 3390 OPEN-3, OPEN-8, OPEN-9, OPEN-E
Emulation type 3390-3, -3A, -3B, -3C, -3R, -9, -L OPEN-3, OPEN-8, OPEN-9, OPEN-E
Ability to intermix emulation type Yes, for 3390. No for open-system volumes
or Hitachi SANtinel - S/390®volumes
Yes, by track geometry (except for
AIX®). No for 3390®volumes.
Maximum number of volumes (normal
and Virtual LVI/LUN) per parity group
256 256
Maximum number of volumes (normal
and Virtual LVI/LUN) per subsystem
8,192 8,192
Minimum size for one Virtual LVI/LUN
volume
1 user cylinder (+ control cylinders) 35 MB (+ control area)
Maximum size for one Virtual LVI/LUN
volume
See Table 1.5 See Table 1.5
Size increment 1 user cylinder 1 MB
Disk location for Virtual LVI/LUN
volumes
Anywhere Anywhere
Note: VLL functions are not applicable to OPEN-L volumes.

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8Chapter 1 Overview of LUN Expansion and Virtual LVI/LUN
Table 1.4 Minimum and Maximum Virtual LUN Volume Capacities (Open Systems)
Setting size (MB) Actual Size (MB) Notes
35 35.15625 Minimum VLL volume capacity
500 500.625
1000 1000.546875
2000 2000.390625
2347 2347.03125 Maximum OPEN-3 volume size
7007 7007.34375 Maximum OPEN-8 volume size
7042 7042.5 Maximum OPEN-9 volume size
13893 13893.04688 Maximum OPEN-E volume size
Table 1.5 shows maximum VLL volume capacities of each emulation type.
Table 1.5 Control Cylinders/Control Area for Each LVI/LU Type
LVI Type Control Cylinders Maximum User Cylinders LU Type Maximum User MB Control Area (MB)
3390-3 (A/B/C) 6 3339 OPEN-3 2347 5
3390-3R 6 3339 OPEN-8 7007 19
3390-9 25 10017 OPEN-9 7042 19
3390-L 23 32,760 OPEN-E 13893 13
OPEN-L Not applicable
Note: VLL functions are not applicable to OPEN-L volumes.