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IBM i Virtualization and Open Storage
(read-me first)
Mike Schambureck and Keith Zblewski
IBM Lab Services IBM Power Systems, Rochester, MN
March, 2013
This “read-me first” paper provides detailed instructions on using IBM i 6.1/7.1 virtualization and
connecting open storage to IBM i. It provides information on the prerequisites, supported
hardware and software, planning considerations, install and post-install tasks such as backups.
The paper also contains links to many additional information sources.
I want to thank our reviewers for their assistance: Wayne Holm, Collin Devilbiss, Jyoti Dodhia,
Janus Hertz, Peter Croes, Dave Murray, Vess Natchev andTom Grigoleit
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1 IBM i Virtualization and Open Storage (read-me first) Mike Schambureck and Keith Zblewski ([email protected] and [email protected])

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10 or earlier Storage adapters (FC, SAS, SCSI) Yes Must be supported by IBM i 6.1 or higher and supported on POWER6/7-based IBM Power server Stor

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11 is created, it occupies that amount of physical storage in the host IBM i LPAR, even if the disk capacity is only 50% utilized in the client LP

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12 The hosting IBM i partition will experience an increase in the paging of its memory pages as a result of its hosting role. Monitor and adjust

Strona 5 - 1.3 IBM i on a Power blade

13  A logical port on a HEA  A virtual Ethernet adapter Note that both physical and virtual I/O resources can be assigned to an IBM i virtual

Strona 6 - 2 IBM i hosting IBM i

14 2.5.4 Configuring Electronic Customer Support (ECS) over LAN A supported WAN adapter can be assigned to the IBM i client partition for ECS. A

Strona 7 - 2.1.2.1 Disk virtualization

15 2.5.7 Operational considerations Remember that the IBM i host partition’s state may affect the IBM i client partition. For instance, when the

Strona 8 - 2.1.2.2 Tape virtualization

16 3 IBM i using open storage configurations 3.1 Storage Area Networks 101 There are some basic SAN concepts that need to be understood by a per

Strona 9 - 2.2.1 Hardware

17  As a client of VIOS, with VIOS facilitating the access to the storage using N-Port ID virtualization (NPIV). In this case VIOS does not see

Strona 10 - 2.3.1 Storage planning

18 Another source of information is the IBM i POWER External Storage Support Matrix Summary at http://www.ibm.com/support/techdocs/atsmastr.nsf/W

Strona 11 - 2.3.2 Performance

19 4 IBM i using direct attach storage The capability to use open storage directly attached to IBM i has been around for a while, but only on SAN

Strona 12 - 2.3.3 Dual hosting

2 1 IBM i virtualization solutions ... 5 1.1 IBM i logical pa

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20 5 IBM i hosted by VIOS 5.1 Virtual SCSI and Storage virtualization concepts The IBM i storage portfolio now includes integrated SCSI, SAS or

Strona 14 - 2.5.6 Backups

21 The hardware and virtualization components for attaching open storage to IBM i illustrated in Figure 4 also apply to using DS5000, XIV and othe

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22 Figure 5: Using NPIV for IBM i From the storage subsystem’s perspective, the LUNs, volume group and host connection are created as though the

Strona 16 - Performance section

23 In an IBM i client partition, a VSCSI client adapter is recognized as a type 290A DCxx storage controller device. Figure 6 depicts the VSCSI

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24 LUNs available in VIOS can then be linked to the new vhostX device through vtscsiX devices, making them available to IBM i. Prior to May 2009,

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25  Log into VIOS with padmin or another administrator user ID. VIOS always has partition ID 1 when IVM is used, and by default carries the ser

Strona 19 - 4.1.1 IBM i host kits

26  Specify the next available Server Adapter slot number (determined above) and click “Only selected client partition can connect”. Do NOT use

Strona 20 - 5 IBM i hosted by VIOS

27  Click the Virtual Adapters tab and then click Actions -> Create Virtual Adapter -> SCSI Adapter…  Specify the next available (determ

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28 One use of the command line is to add more details to the LUNs to better manage them. The make virtual device (mkvdev) command has a device par

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29  Select the cd#/virtual optical device and assign it to a partition. 5.4.5 Assigning a physical or virtual Optical/DVD/CD drive using IVM IV

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3 5.2 Virtual Fibre Channel adapter concepts ... 21 5.2.1 NPIV Supported hardware and s

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30  If this VE adapter is for VIOS and it will be used for a shared Ethernet adapter (SEA) (coming up in the following sections), then select th

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31 5.5.5 Shared Ethernet Adapters (SEAs) In VIOS, the same Ethernet type of device, entX, is used for logical Host Ethernet ports, physical and v

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32 5.5.5.3 Configuring SEAs using the VIOS CLI The following document describes how to set up auto mode using the command line interface, but y

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33  cfgdev  If you are using IVM, click Hardware Inventory and then click Configure devices to run the cfgdev command. After detecting the d

Strona 28 - 5.4 Optical virtualization

34 6.2 Performance When creating an open storage LUN configuration for IBM i as a client of VIOS, it is crucial to plan for both capacity and per

Strona 29 - 5.5 Network virtualization

35 MPIO solution that provides redundant paths to a single set of LUNs. There are two MPIO scenarios possible with VIOS that remove the requiremen

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36  chdev –dev hdiskX –attr algorithm=round_robin, or  chdev –dev hdiskX –attr algorithm=fail_over These commands must be repeated for each

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37 Note: For D5000, DS4000 and DS3000 storage subsystems with dual controllers, a connection must be made to both of the controllers to allow an a

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38  Note: The order of the parameters can be changed, as shown, to facilitate repeating the command and only having to alter the hdisk number. 

Strona 33 - Best Practices

39 7 Attaching open storage to IBM i through VIOS As described in the “IBM i using open storage throughhosted by VIOS Virtual SCSI and Storage v

Strona 34 - 6.2 Performance

4 8.2 Virtual tape configuration using the SDMC ... 43 8.3 Virtual tape configuration using IV

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40 host can access. These zone sets are combined under a zone configuration for saving and enabling/activating. See the switch manuals for the s

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41 This is because AIX partitions can also use this interface and AIX supports up to 256 hdisks per adapter (though they seldom map that many). I

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42 You may have to check the port type defined on the tape media library for the fibre channel port associated with the tape device.  Log int

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43 8 IBM i tape options An IBM i client partition with a VIOS host can use a mix of virtual and physical I/O resources. If the VIOS hosting p

Strona 39 - 7.3 SAN Zoning

44  Use telnet or PuTTy to connect to the VIOS partition. Sign in using padmin as the user ID.  Enter cfgdev to check for new devices.  Ent

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45 9 IBM i installation and configuration The IBM i client partition configuration as a client of VIOS is the same as that for a client of an IB

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46 Figure 10 Sample communications resources. If the IBM i client partition is to use a virtual Ethernet adapter to communicate with an external

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47  In IVM, click View/Modify Partitions .  Select the IBM i partition.  From the More Tasks list, select Operator panel service functions 

Strona 43 - 8 IBM i tape options

48 10 DS5000 direct attachment to IBM i 10.1 Overview IBM i has been able to connect to 512-byte-per-sector open storage through VIOS since early

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49 As of the publication date, only the following software or firmware is supported for IBM i directly attached to DS5100 and DS5300 systems. Thi

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5 1 IBM i virtualization solutions IBM i 6.1 introduced three significant virtualization capabilities that allow faster deployment of IBM i workl

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50 results for IBM i directly attached to DS5300 system are in Chapter 5.1.2 of the Performance Capabilities Reference manual at: http://www-03.i

Strona 47 - 9.1.7 Backups

51 11 Redundant VIOS Virtual Servers hosting IBM i For a production IBM i virtual server hosted by VIOS, you want redundant VIOS virtual servers i

Strona 48 - 10.1 Overview

52 12 Copy Services and IBM i 12.1 DS4000 and DS5000 IBM has conducted some basic functional testing of DS4000 and DS5000 and Copy Services with

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53 PowerHA® for IBM i. The components of the solution – DS4000 or DS5000 FlashCopy/VolumeCopy, VIOS and IBM i – must be managed separately and re

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54 Figure 12: the test environment used for ERM. 12.1.3 ERM support statements The use of DS4000 and DS5000 Enhanced Remote Mirroring with IBM

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55 Support statements for ERM:  DS4000 and DS5000 ERM is supported by IBM i as a client of VIOS on both IBM Power servers and IBM Power blades.

Strona 52 - 12 Copy Services and IBM i

56 Figure 13:The test environment used for FlashCopy. 12.2.1.2 FlashCopy statements The use of SVC FlashCopy with IBM i as a client of VIOS is

Strona 53 - 12.1.2.1 Test scenario

57 12.2.2 Metro and Global Mirror 12.2.2.1 Test scenario Figure 14 shows the test environment used for Metro and Global Mirror. Figure 14: T

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58 Support statements for SVC Metro and Global Mirror:  Both SVC Metro Mirror and Global Mirror are supported by IBM i as a client of VIOS on

Strona 55 - 12.2.1.1 Test scenario

59 12.4 DS5000 Direct attach Copy Services IBM has conducted some basic functional testing of DS5100 and DS5300 Copy Services when directly atta

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6 2 IBM i hosting IBM i 2.1 IBM i hosting IBM i concepts The capability of an IBM i partition to host another IBM i partition involves hardwar

Strona 57 - 12.2.2.1 Test scenario

60 13 Appendix: 13.1 Additional resources These websites provide useful references to supplement the information contained in this paper 13.2 IBM

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61  IBM Midrange System Storage Hardware Guide(Redbook): http://www.redbooks.ibm.com/abstracts/sg247676.html?Open.  IBM System Storage DS3500:

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62 14 Trademarks and disclaimers This document was developed for IBM offerings in the United States as of the date of publication. IBM may not m

Strona 60 - 13 Appendix:

63 Cooling, Chiphopper, Chipkill, Cloudscape, DataPower, DB2 OLAP Server, DB2 Universal Database, DFDSM, DFSORT, DS4000, DS6000, DS8000, e-busines

Strona 61 - 13.5 SVC

7 partition is supported for IBM i in this environment, by assigning both the types of adapters to the partition in the HMC or SDMC. 2.1.2 Stora

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8 Figure 3: Example of what the client partition sees as storage. Storage spaces for an IBM i client partition do not have to match physical dis

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9 2.1.2.3 Optical virtualization Any optical drive supported in the host IBM i LPAR can be virtualized to an IBM i client LPAR. An existing VSCSI

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