© 2008 ibm corporation ibm power systems ibm i and open storage update october 28 th, 2008 vess...

© 2008 IBM Corporation

IBM Power Systems

IBM i and Open Storage Update

October 28th, 2008

Vess Natchev, [email protected] Blades and VirtualizationIBM Rochester


IBM Power Systems

Agenda

New: DS4000 Copy Services for IBM i New: SVC support Solution review

– Open storage environment

– Virtualization components

– HMC view

– VIOS view

– IBM i view

– IVM vs. HMC management

– Dual-hosting and MPIO

Support review– Storage subsystems and servers

– Firmware and software

Backups Documentation


IBM Power Systems

• Production LPAR on IBM Power server or IBM BladeCenter JS12/JS22• IBM i as client of VIOS

• Backup LPAR on IBM Power server or IBM BladeCenter JS12/JS22• IBM i as client of VIOS

• DS4700 or DS4800• FlashCopy or Volume Copy• Full system only

FlashCopy and Volume Copy

Fibre Channel

Fibre Channel

• DS4000 FlashCopy and VolumeCopy are supported by IBM as a client of VIOS on both IBM Power servers and IBM Power blades

• Full-system FlashCopy and VolumeCopy when the production IBM i logical partition (LPAR) is powered off are supported

• Full-system FlashCopy and VolumeCopy when the production IBM i LPAR is in restricted state are supported

• The DS4000 'disable' and 're-create' functions with full-system FlashCopy and VolumeCopy when the production IBM i LPAR is powered off or is in restricted state are supported

• Full-system FlashCopy and VolumeCopy of the production IBM i logical partition (LPAR) after only using the IBM i 6.1 memory flush to disk (quiesce) function are not supported

• Full-system FlashCopy and VolumeCopy when the production IBM i LPAR is running are not supported

• FlashCopy and VolumeCopy of Independent Auxiliary Storage Pools (IASPs) are not supported

• Manual solution• No toolkit available• Not supported by PowerHA

See IBM i Virtualization and DS4000 Read-me First (Ch. 12) – http://www.ibm.com/systems/i/os/


IBM Power Systems

• Production LPAR on IBM Power server or IBM BladeCenter JS12/JS22• IBM i as client of VIOS

• Backup LPAR on IBM Power server or IBM BladeCenter JS12/JS22• IBM i as client of VIOS

• DS4700 or DS4800• Synchronous Enhanced Remote Mirroring• Full system only

Fibre Channel

Enhanced Remote Mirroring (ERM)

Fibre Channel

• PowerHA for IBM i (Geographic Mirroring, specifically) is also supported and is lead-with solution

• DS4000 ERM is supported by IBM as a client of VIOS on both IBM Power servers and IBM Power blades

• Only Synchronous ERM (DS4000 Metro Mirror) is supported

• Asynchronous ERM (DS4000 Global Copy) or Asynchronous ERM with Write Consistency Group (DS4000 Global Mirror) are not supported

• Full-system Synchronous ERM for a planned switchover (IBM i production LPAR is powered off) is supported

• Full-system Synchronous ERM for an unplanned failover (IBM i production LPAR is running) is supported

• Replication of IASPs is not supported

• Suspending replication and accessing the replicated LUNs on backup site is not supported

• Manual solution• No toolkit available• Not supported by PowerHA

See IBM i Virtualization and DS4000 Read-me First (Ch. 12) – http://www.ibm.com/systems/i/os/


IBM Power Systems

SVC Support SVC supported for IBM i with VIOS

– IBM i cannot directly attach to SVC

– Similar to other open storage

– Assignment of SVC disk to IBM in VIOS

Storage announcement on October 28th, 2008

– IBM i announcement later in 4Q 2008 with same support

Availability is November 21st, 2008

Supported on all IBM Power servers and BladeCenter JS12/JS22

SVC Entry Edition also supported


IBM Power Systems

IBM i and Open Storage: Existing Solution Technical Review


IBM Power Systems

Open Storage Environment

DS4000

EXP810

EXP810

System Manager

RemoteSupport Manager

Modem

IBMAlerts via email

Alerts via email

Dial-in via Modem

EXP810

Admin

IBM Power 520, 550, 560, 570, 595

System Manager – for configuring and managing the DS4000

Remote Support Manager – for monitoring the DS4000


IBM Power Systems

Virtualization Components Virtual I/O Server (VIOS)– Required to connect to open storage

– Part of PowerVM DASD

– Fibre Channel adapter(s) assigned to VIOS LPAR in HMC

– LUNs are 512B open storage

– Each SAN LUN virtualized directly to IBM i client

– Storage pools not used in VIOS for IBM i

– LUNs virtualized by creating virtual target SCSI devices

Virtual SCSI adapters– Created in HMC

– Server SCSI adapter in VIOS, client SCSI adapter in IBM i

– Multiple pairs supported when HMC used

Optical– IBM i can use any DVD drive connected

to a supported VIOS adapter

– DVD drive in VIOS virtualized directly (OPTxx)

VIOS Host

Virtual SCSI connection

IBM i Client

DS3400DS4700DS4800 DVD

hdiskX LUNsDDxx

/dev/cd0

DVD

OPTxx

IVEVirtual LAN connection

CMNxx

SEA

vtscsiX

vtoptX

512B AIX/VIOS LUNs


IBM Power Systems

HMC View: VIOS Partition

Partition type is VIOS (not AIX) Physical storage adapter assigned to VIOS At least one Virtual SCSI adapter pair

(server-client) exists per IBM i client Multiple server-client adapter pairs possible

when system is HMC-managed Detailed VIOS information in PowerVM

Operations Guide (http://publib.boulder.ibm.com/infocenter/systems/index.jsp?topic=/iphdx/abstract_pvme_guide.htm)


IBM Power Systems

HMC View: IBM i Partition

Virtual SCSI client adapter DASD and optical are

accessible through the same VSCSI client adapter

By using multiple adapters, a virtual client LPAR can use DASD from multiple hosts


IBM Power Systems

VIOS View I

VIOS is a separate partition type Command-line interface unless IVM-managed Not enabled by default on any IBM Power servers

– It is enabled on BladeCenter JS12, JS22 PowerVM Standard or Enterprise Edition must be ordered

– VIOS media

– Enablement code to allow partition type VIOS Use HMC to enter enablement code

– ASMI can also be used


IBM Power Systems

VIOS View II

Once DS4000 LUNs are available in VIOS, they can be configured as virtual disks for IBM i

– Example: physical LUN hdiskX can be mapped as virtual disk for IBM i by creating a virtual target device (vtscsiX)

VIOS command line is used when HMC-managed– Telnet to VIOS; default administrator ID is padmin

VIOS command examples– lsdev: shows physical and virtual devices

– cfgdev: discovers newly added devices (such as new LUNs)

– mkvdev: creates virtual devices to make resources available to client partitions

• mkvdev –vdev hdisk1 –vadapter vhost0• hdisk1 is LUN to assign to IBM i; vhost0 is VSCSI server adapter in VIOS

for this IBM i partition VIOS commands to virtualize resources are well documented

– IBM Systems Information Center (http://publib.boulder.ibm.com/infocenter/systems/scope/hw/index.jsp?topic=/iphb1/iphb1_vios_commandslist.htm)

– PowerVM Operations Guide (http://publib.boulder.ibm.com/infocenter/systems/index.jsp?topic=/iphdx/abstract_pvme_guide.htm)


IBM Power Systems

IBM i View: Service Tools I

Virtual storage IOA is the VSCSI client adapter Disk units are virtual target devices mapped to LUNs in VIOS


IBM Power Systems

IBM i View: Service Tools II

No concept of “IBM i protected” and “IBM i unprotected” LUNs with open storage Standard open storage LUNs created, attached to AIX/VIOS-type host Once virtualized by VIOS, LUNs will appear unprotected in IBM i LUNs should not be mirrored in IBM (already protected on SAN) LUNs assigned to ASPs/IASPs as any other disk


IBM Power Systems

IBM i View: Operating System

Type of virtualized disk is always 6B22 (same as when IBM i is hosting IBM i) Size does not have to match physical disk unit sizes Supported sizes for LUNs through VIOS are 160MB – 2TB


IBM Power Systems

IVM vs. HMC Management: IVM

Browser-based LPAR and virtualization interface Included with VIOS, but VIOS can be used without managing system with IVM Supported on BladeCenter JS12/JS22, IBM Power 520, 550, 560 (not 570 or 595) Allows GUI management of resources virtualized by VIOS When system is IVM-managed, IBM i partitions must use only virtual resources VIOS must have partition ID = 1 System is managed either by IVM or HMC


IBM Power Systems

IVM vs. HMC Management: HMC

Browser-based LPAR interface Supported on all IBM Power servers (not supported on BladeCenter JS12 or JS22) IBM i partitions can use a mix or virtual and physical resources GUI for management of VIOS resources not available (IVM), must use VIOS command line


IBM Power Systems

Dual-hosting and MPIO

IBM i Client LPARs have a dependency on VIOS– VIOS must be running

– VIOS must not be running in service (single-user) mode

When will client LPAR be affected?– Scheduled maintenance

– Hardware upgrades

– Fix Packs

– Release upgrades

– Unplanned downtime

Consider using 2 VIOS LPARs


IBM Power Systems

Dual VIOS Hosts – Supported

VIOS Host


IBM i Client

DS4700DS4800

DVD

hdiskX LUNsDDxx

/dev/cd0

DVD

OPTxx


CMNxx

SEA

vtscsiX

vtoptX

512B AIX/VIOS LUNs

Duplicate single VIOS environment (shown here)

– Virtual SCSI client/server adapter pair

– Separate set of LUNs in 2nd VIOS

– Same size and number of LUNs

Adapter-level mirroring between 2 sets of disk used in client LPAR

– Mirroring between virtual SCSI client adapters

Client can withstand failure or scheduled downtime in either host

Can be used for multiple clients

Weigh against cost


IBM Power Systems

MPIO in VIOS – Supported

VIOS Host


IBM i Client

DS3400DS4700DS4800

DVD

hdiskX LUNsDDxx

/dev/cd0

DVD

OPTxx


CMNxx

SEA

vtscsiX

vtoptX

512B AIX/VIOS LUNs

FC

FC

RDAC (Redundant Disk Array Controller) or MPIO driver used in VIOS MPIO configuration created on DS4000


IBM Power Systems

VIOSAIX client

Hypervisor

vscsitarget

vscsitarget

vscsiinitiator

vscsiinitiator

disk driver

MPIO

SAN

MPIO in client LPAR – Not Supported for IBM i

VIOS


IBM Power Systems

Support: Storage Subsystems and Servers

These statements apply only to the end-to-end solution of IBM i using DS4000 storage via VIOS virtualization (not to all VIOS support)

Supported storage subsystems (both IBM Power servers and BladeCenter JS12/JS22)

– DS3400 (both SAS and SATA drives; SAS recommended for production LPARs)

– DS4700 (both Fibre and SATA drives, Fibre recommended for production)

– DS4800 (both Fibre and SATA drives, Fibre recommended for production)

– DS8100 (also supported natively by IBM i)

– DS8300 (also supported natively by IBM i)

Supported servers:

– IBM Power 520, 550, 560, 570, 595

– IBM BladeCenter JS12 and JS22

Supported adapters:

– http://www14.software.ibm.com/webapp/set2/sas/f/vios/documentation/datasheet.html (bottom of page)


IBM Power Systems

Support: Firmware and Software

IBM i 6.1 (latest PTFs recommended as always)

VIOS 1.5.1 Fix Pack 10.1 or later

Power System firmware (service processor) 320_040_031 or later

HMC V7 R3.2.0 or later

DS4000 controller firmware 6.x.x or 7.x.x

DS4000 Storage Manager GUI 9.x or 10.x

AIX/VIOS host kit on DS4000 is required (LUNs for IBM i virtualized by VIOS)

RDAC and MPIO drivers for VIOS supported (transparent to IBM i)


IBM Power Systems

Backups for IBM i as Client of VIOS

Simplest approach: Regular Tape Backup– Mixing of virtual and direct resources in IBM i client *is* supported

• Does not apply to Power blade environment– Your Choice of direct-attach, SAN-attach, or DLPAR tape sharing

Other backup solutions exist– IBM i save to virtual tape IMGCLG; FTP IMGCLG files to another IBM i partition

– IBM i save to virtual optical IMGCLG, FTP images to VIOS or another IBM i

– IBM i save to file-backed virtual optical in VIOS; VIOS TSM client save over network

– IBM i save to file-backed virtual optical in VIOS; FlashCopy VIOS virtual media LUNs and attach to 2nd VIOS

– FlashCopy (full copy) VIOS LUNs assigned to IBM i; bring up separate IBM i partition under VIOS from copy

– Replicate VIOS LUNs assigned to IBM i; bring up separate IBM i partition under VIOS from copy


IBM Power Systems

Documentation Performance

– Latest Performance Capabilities Reference manual, Chapter 14.5 – http://www.ibm.com/systems/i/advantages/perfmgmt/resource.html

– Disk Magic strongly recommended for sizing Implementation and support statements

– IBM i Virtualization and DS4000 Read-me First (2nd half) – http://www.ibm.com/systems/i/os/

Implementation – IBM i and Midrange External Storage Redbook (4Q 2008)

VIOS– PowerVM Operations Guide –

http://publib.boulder.ibm.com/infocenter/systems/index.jsp?topic=/iphdx/abstract_pvme_guide.htm

– VIOS command line – http://publib.boulder.ibm.com/infocenter/systems/scope/hw/index.jsp?topic=/iphb1/iphb1_vios_commandslist.htm

– VIOS-only support statements – http://www14.software.ibm.com/webapp/set2/sas/f/vios/documentation/datasheet.html

© 2008 ibm corporation ibm power systems ibm i and open storage update october 28 th, 2008 vess...

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