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Series.

Common Europe Luxembourg
Introducing IBM eServer i5 & i5/OS

LPAR i5 “Up-to-Date” :
Logical Partitions on the IBM Power5

by Eddy PASTEGER

Summary of Contents for eserver i5

Page 1: ...iSeries mySeries iSeries mySeries Common Europe Luxembourg Introducing IBM eServer i5 i5 OS LPAR i5 Up to Date Logical Partitions on the IBM Power5 by Eddy PASTEGER 1 2...

Page 2: ...on 3 iSeries mySeries Introduction Objectives Understand the LPAR functionality as implemented on the IBM Power5 servers Understand planning considerations and system requirements Warning This present...

Page 3: ...1 Architecture Chapter 2 Resources Management Concepts Chapter 3 LPAR Capable i5 Models Chapter 4 Planning Chapter 5 Hardware Management Console Chapter 6 Virtual Partition Manager 5 iSeries mySeries...

Page 4: ...tecture The Service Processor aka SP Once main power is connected The SP activates its own firmware operating system Control panel shows C1xx progress codes Gathers vital product data VPD from the ele...

Page 5: ...ol panel shows 01 and the green power LED is on The server is in Hypervisor Standby mode 9 iSeries mySeries Architecture The Power Hypervisor Previously part of the System Licensed Internal Code SLIC...

Page 6: ...ity an isolation between partition Partition allowed to access only to their allocated resources Enforced by the Power Hypervisor Reinitializes processors resets registers flushes caches Clears memory...

Page 7: ...vers and the boot manager RTAS is a service that passes platform dependent system calls to the Hypervisor Other is characteristic to the guest operating system E g Linux has a monolithic kernel while...

Page 8: ...Management Concepts What is logical partitioning The ability to make a single server run as if it were many independent systems Each logical system is called a Partition Each partition operates as an...

Page 9: ...ions on the IBM Power5 Resources Management Concepts Processor 17 iSeries mySeries Resources Management Concepts Processor Concepts Dedicated vs Shared Processors Virtual Processors Capped vs Uncapped...

Page 10: ...fers to a whole processor that is dedicated to a single partition One or more processors can be dedicated to a partition The most simple way to distribute processors among logical partitions Rules req...

Page 11: ...ign partial processors to a partition Physical processors lives in a shared processor pool By default any unassigned processor is a member of the shared processor pool 21 iSeries mySeries Processor Co...

Page 12: ...s 23 iSeries mySeries Processor Concepts Shared Processors Rules requirements A processing unit PU represents the cycles of a single processor At least 0 10 PU 1 millisecond Granularity of movements 0...

Page 13: ...e the chance for processor memory affinity Increase the Power Hypervisor work Tracking each partition use of its allocated milliseconds 25 iSeries mySeries Processor Concepts Virtual Processors The nu...

Page 14: ...Processor Concepts 20 milliseconds of processor time 10 milliseconds P1 P2 P3 Virtual Processors 27 iSeries mySeries Processor Concepts 20 milliseconds of processor time 10 milliseconds P1 P2 P3 Virtu...

Page 15: ...essor Example requesting 0 20 PU to run on 4 VCPU means 0 20 4 0 05 0 10 Changes are dynamic without any IPL within the configured ranges 29 iSeries mySeries Processor Concepts Uncapped Processors Unc...

Page 16: ...do I recommend Keep things simple 31 iSeries mySeries Processor Concepts Simple Recommendations On small configurations use shared uncapped processor Allocate desired processing units according needs...

Page 17: ...ing different execution units or pipes SMT optimizes the usage of the 7 execution units of a PowerPC processor Hypervisor only deals with physical processors Each operating system can use the physical...

Page 18: ...128 or 256 MB blocks LMB size is a system wide parameter LMB is the smallest amount of memory that can be manipulated 35 iSeries mySeries Main Storage Concepts Memory Allocation Facts Hypervisor uses...

Page 19: ...64 192 next power of 2 is 256 HPT size will be 256 MB Recommendation Take care of HPT when allocating memory to partitions Plan to allocate 12288 256 12032 MB for the partition Memory actually used wi...

Page 20: ...eping as much memory as possible on the same node The HPT for the partition will be assigned on the same node How becomes memory affinity with dynamic processor memory moves The system will do its bes...

Page 21: ...ne at slot level A single slot can be allocated I O structure must be understood for proper configuration 41 iSeries mySeries I O Concepts Power5 System Main Storage Bus Main Storage I O Hub HSL Loop...

Page 22: ...s I O allocations are done at slot level A single slot can be allocated BUS IOP IOA requirements must be met Allocate a slot as desired If the resource is available at allocation then grab it Otherwis...

Page 23: ...ory Alternate IPL resource Tells the hypervisor which IOA drives the alternate IPL device This is optional Console resource Tells the hypervisor which IOA drives the console resource This can be the H...

Page 24: ...The more virtual slots you configure the more the hypervisor will need memory Similar in concept to physical I O adapter slot Each slot can be populated with a virtual adapter instance Serial Network...

Page 25: ...Virtual Ethernet Virtual SCSI 49 iSeries mySeries Virtual I O Concepts Virtual I O Facts What is dynamic As for physical I O adapters virtual I O adapters can be dynamically added changed or removed U...

Page 26: ...mote partition Selected remote partition 51 iSeries mySeries Virtual I O Concepts Virtual Ethernet Virtual ethernet adapter provides connections between the partition and virtual networks Purpose Prov...

Page 27: ...s connection between partitions Purpose Storage virtualization Parameters Slot number Adapter type server or client Connection information for the server who can connect Any remote partition Selected...

Page 28: ...nications between systems Works at HSL bus speed 2 GB s 20 Gbps Also known as HSL OptiConnect Requires hardware planning Multiple CECs within the same HSL loop Requires additional software 5722SS1 Opt...

Page 29: ...iSeries mySeries Logical Partitions on the IBM Power5 Dynamic LPAR 57 iSeries mySeries Dynamic LPAR What is called Dynamic Logical Partitioning The ability to add move or remove resources without syst...

Page 30: ...r time Clear caches and registers Allocation of processor or processor time Nearly immediate 59 iSeries mySeries Dynamic LPAR What can be changed dynamically Memory Within established minimum and maxi...

Page 31: ...ries mySeries Dynamic LPAR What can be changed dynamically An I O slot move implies Deactivation of the dependent device VARY OFF Deallocation of the slot IOP IOA gets first the inoperative then not d...

Page 32: ...be moved Configuration maintained in the partition profile Changes to the desired required status of a slot requires partition deactivation an reactivation Changes to the number of virtual slots requ...

Page 33: ...L3 Cache Processing units available 1 00 Maximum partitions 10 Model i5 520 6000 CPW Processor 2 Ways Power5 1 65GHz L1 L2 L3 Cache Processing units available 2 00 Maximum partitions 20 65 iSeries my...

Page 34: ...or 16 Ways Power5 1 65GHz L1 L2 L3 Cache Processing units available 16 0 Maximum partitions 160 67 iSeries mySeries IBM eServer i5 595 Model i5 595 CoD from 24500 to 165000 CPW Minimal Configuration P...

Page 35: ...mySeries Logical Partitions on the IBM Power5 Planning 69 iSeries mySeries Planning Think Understand eServer i5 capabilities Review previous chapters System Builder Understand Operating System require...

Page 36: ...MC thru virtual serial port One alternate IPL device DVD or tape unit can be switchable or dedicated One backup device A tape unit can be switchable or dedicated Operating system i5 OS V5R3M0 DO NOT U...

Page 37: ...ultiple standard benchmarks TPC Technical Publication Center SPEC System Performance Evaluation Center Other IBM internal workloads Does not simulate I O operations 73 iSeries mySeries Planning About...

Page 38: ...One alternate boot device CD or DVD physical or virtual One backup device A tape unit can be switchable dedicated or virtual Operating system A PowerPC compatible 64 bits kernel Linux edition Red Hat...

Page 39: ...applications you ll have to run One disk unit One console Can be a HMC thru virtual serial port One alternate boot device CD or DVD One backup device A tape unit can be switchable or dedicated 77 iSe...

Page 40: ...OS partition You can switch a device between i5 OS partitions You can switch a device between AIX Linux partitions 79 iSeries mySeries Planning Know restrictions Disk formats i5 OS uses 540 bytes sec...

Page 41: ...orted OS version release Consider EVERY partition Upgrades to i5 OS V5R3 V5R3 does NOT support models 150 6xx Sxx V5R3 is the last release to support models 170 250 7xx V5R3 is the last release to sup...

Page 42: ...ned position Install and configure HMC Setup wizard Power on the new system to Hypervisor Stand by mode Create LPAR definitions Start or reload If disk were moved just start Else just reload Validate...

Page 43: ...ystem error events Activating CoD resources Supports i5 OS Linux and AIX Is it mandatory YES for LPARed systems YES for CoD systems Not required to operate partitions 85 iSeries mySeries Hardware Mana...

Page 44: ...on the IBM Power5 Hardware Management Console Connecting HMC 87 iSeries mySeries Hardware Management Console Ethernet Ports Private LAN Open LAN Auto MDIX ports Medium Dependent Interface Crossover S...

Page 45: ...MC2 LAN2 89 iSeries mySeries Hardware Management Console Cloning HMC configuration System profiles and partition profiles are stored in SP s NVRAM When SP detects that a redundant HMC is connected SP...

Page 46: ...nitions are locally stored and must be set up separately on each HMC User authorizations Network settings Service Settings HMC provides Service Focal Point and Service Agents functions Enable service...

Page 47: ...MC2 LAN2 Service Support ETH0 ETH1 HMC HMC1 LAN1 HMC2 LAN2 ETH0 ETH1 HMC HMC1 LAN1 HMC2 LAN2 93 iSeries mySeries Hardware Management Console Service Support Open LAN Private LAN ETH0 ETH1 HMC HMC1 LAN...

Page 48: ...es Hardware Management Console Internet HMC HMC C C C S Working with HMC in open networks 95 iSeries mySeries iSeries mySeries Logical Partitions on the IBM Power5 Hardware Management Console HMC Func...

Page 49: ...al partitions Partition profiles System profiles 97 iSeries mySeries Hardware Management Console HMC Code Update Gets and install HMC version releases and hot fixes Via removable media local FTP serve...

Page 50: ...eries Licensed Internal Code Updates Manages managed systems firmware Installed Temporary activated and Accepted Permanent 99 iSeries mySeries Hardware Management Console HMC Users Define users Define...

Page 51: ...C Configuration All HMC parameters Date time network 101 iSeries mySeries Hardware Management Console Service Agent Configuration Notify problems Kind of problems all or home call To the user via SMTP...

Page 52: ...ectivity outbound and inbound Via SMTP or VPN 103 iSeries mySeries Hardware Management Console Service Focal Point Manage reported events and errors Concurrent maintenance Service utilities Access to...

Page 53: ...iSeries mySeries One more thing 105 iSeries mySeries iSeries mySeries Logical Partitions on the IBM Power5 Virtual Partition Manager 106...

Page 54: ...e SAVSYS Ensure that you have the last firmware level Minimum level is SF230_113 via PTF MH00265 Maximum 4 Linux partitions I O for all linux partition must be managed by a single i5 OS instance Only...

Page 55: ...ate partitions Migration to HMC is not available If a HMC is deployed in a future stage Linux partitions must be re created Data stored thru virtual I O on i5 OS is preserved Configurations screens ar...

Page 56: ...iSeries mySeries Questions Answers 111 iSeries mySeries iSeries mySeries Logical Partitions on the IBML Power5 Bibliography 112...

Page 57: ...5 architecture Learn how to install configure and manage LPAR with the latest HMC Discover how to implement OS 400 logical partitions 113 iSeries mySeries Bibliography Draft Document for Review Novemb...

Page 58: ...ources with VPM 115 iSeries mySeries Bibliography ibm com redbooks Greg Hidalgo Miroslav Iwachow Axel Lachman Henry Matos Glen McClymont Lori O Dell Susan Powers Samit Saliceti Jerry Watson The author...

Page 59: ...iSeries mySeries REAL Solutions S A Rue d Eich 33 L 1461 Luxembourg Eddy Pasteger System Engineer Manager iSeries Certified Solutions Expert Voice 352 43 65 22 1 Fax 352 42 26 38 E mail eddy pasteger...

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