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Www.quick-software-line.com High Availability for IBM Power i.

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Presentation on theme: "Www.quick-software-line.com High Availability for IBM Power i."— Presentation transcript:

1 www.quick-software-line.com High Availability for IBM Power i

2 www.quick-software-line.com Settings -Settings centralized on SOURCE system -The environment contains everything needed for the settings and for the replications follow-up Replication -SIP, Sequence Integrity Processing: unique engine to process all journal entries -CCI, Core Cycle Information: synchronous replication loop, with real time acknowledgements -Automatic journaling management Quick-EDD/HA concepts

3 www.quick-software-line.com Controls and Synchronization -EDC : Synchronization by comparison; only differences are sent to the target system -Linked to replication acknowledgements -Activated by IOA: Independent Object Audit Jobs Follow-Up (JFP) -Replication of jobs information (status, detail of SBMJOB), mandatory in case of fail-over Smart Remote Staging (SRS) -Pause of the replications, thanks to temporary storage of the journal entries on target system: continuous data protection, for example during backup made on the target system, instead of the production one Quick-EDD/HA Concepts

4 www.quick-software-line.com Tools - External audit, control and supervision tools - Sources of programs are available to adapt to different systems Supervision GUI - Light client to monitor at a glance Quick-EDD/HA on all your systems and partitions Switch -Switch scenarios allow a simple and efficient adaptation to all sites and contexts -Management of Switch-over / Fail-over / Return on production system / Systems migrations Quick-EDD/HA Concepts

5 www.quick-software-line.com Settings The « Environment » Object -One single object to describe the entire perimeter -Settings manage the 5 system domains - User libraries (including QGPL, QUSRSYS, …) - System objects (Profiles, authorization lists, configuration …) - IFS, including QDLS - Spools files - System values -Following your selections, Quick-EDD/HA will automatically analyze your applications in order to build the objects list and the list of journals which are necessary for the replication -The environment is automatically replicated on the target system in order to access the information in case of switch  Settings are done only on SOURCE system

6 www.quick-software-line.com Settings Target system description Access to the selections in each domain Journals management rules Replication general parameters

7 www.quick-software-line.com Journaling Any journaling organization is supported Unlimited number of journals Quick-EDD/HA can manage the start of journaling for applications which don’t have journals already Support of all journaling functions MINENTDTA Journal Cache and *STANDBY mode (SS1 Option 42) Before image – Commit/Roll-back Receivers management can be entirely done by Quick-EDD/HA - for different external needs, receivers can be totally or partially managed by other processes « Not wished » journals entries can be ignored by the reading process to avoid communications overload

8 www.quick-software-line.com Journaling Journals management rules Receivers detachment options Receivers deletion options Cache management if activated

9 www.quick-software-line.com Replication Quick-EDD/HA fits any kind of organization -Without restrictions regarding the number of journals -Without restrictions regarding the place of the objects (journals, PF/LF, …) A unique engine to guarantee the sequence: SIP -All the journals are simultaneously handled to guarantee the operations sequence -Audit journal events are integrated in the same process Synchronous communications: CCI -Source system is informed in real time -All the events are acknowledged in real time

10 www.quick-software-line.com SIP – Sequence Integrity Processing  Rebuild of the operations sequence before sending  Simultaneous reading of all the journals of the perimeter  DB / IFS / Audit events are all integrated at the same level

11 www.quick-software-line.com CCI – Core Cycle Information  Detection from the journal  Sending on TARGET system  Direct application on TARGET object  Real-time acknowledgement SOURCE system is always informed about the replications status

12 www.quick-software-line.com Real time acknowledgement Synchro An acknowledgement validates any replication operation -Any replicated event is acknowledged in real time. The SOURCE system manages the whole process. -In case of negative acknowledgement, AUTOMATIC EXECUTION of the object synchronization is made for an immediate repair of the abnormality. Unique synchronization function -EDC module allows to compare two objects to detect the differences. Only these differences are sent on the network to protect the bandwidth -The synchronization does not use the SAV / RST function to avoid any locking of object on the source system -Once synchronized, the object comes back in the replication loop

13 www.quick-software-line.com IOA - Independent Object Audit IOA function monitors the TARGET system -Scheduled or on demand control of all or a part of perimeter objects -Check of the objects presence and correspondence (for the 5 domains of the system) Dynamic repair of the differences -Each difference detected by IOA function triggers immediately a synchronization to repair the object – no manual action is required. -A spool file report is created after each execution

14 www.quick-software-line.com Synchronization EDC and IOA JRN ERR Instant synchronization by comparison and sending of the differences only EDC IOA Diff ? Replication errors, such as permanent controls, call the synchronization module for every noticed abnormality. The abnormality is repaired in real time

15 www.quick-software-line.com Jobs Follow-up and management during a Fail-Over  What happened on production at the moment of the failure?  What Jobs were active?  What Jobs were in JOBQ ? Unique and mandatory function for HA JFP  Track Production Job status  Help for decision in case of Fail-over  Job submission in their corresponding JOBQ Jobs Follow-up  Submission function to get an immediate start of the target system

16 www.quick-software-line.com SRS ACTIVATED Journal entries are stored in a dedicated space. Temporary halting acknowledgement back to production. Target system Data can be used for backups, queries… *I/O Synchronous Mode *NO I/O SRS Active Synchronous Mode Regular process and direct apply of the update on the target system SRS  Staging on the target system  Automated or On Demand Apply  Operations on the target system are easier (Query, backup …) On Demand Applying process Smart Remote Staging

17 www.quick-software-line.com Tools Tools which offer additional functions : - Control functions - Objects, data, perimeter control - Supervision of the replication process - Monitoring functions - Interception of all severe messages (gravity > 30) - Sending by e-mail; SNMP; MSGQ – JOBLOG is attached - Specific objects saves - Scheduler, NetServer, TCP/IP, RDB entries, … - WRKDIRE, Distribution list, … For a total adaptation, all tools are delivered with source files.

18 www.quick-software-line.com Network data System data Tools: Sample Specific objects save

19 www.quick-software-line.com 1 to 4 e-mail recipients SMTP server used for e-mails routing Tools: Sample Options to monitor messages

20 www.quick-software-line.com Ease of use – GUI - General Information GUI monitoring Monitor all servers/lpar’s on a single screen Auto refresh and access to all environments Active? Latency? In Sync? 5 mn a day!

21 www.quick-software-line.com Switch Quick-EDD/HA switch -Only one function to perform Quick-EDD/HA role-swap, for the switch and for the return on production system. -Transparent management of the journaling, triggers, constraints and identity fields -In case of fail-over: Automatic management of the « commit/rollback » transactions, jobs follow-up, stored journal entries Adapted tools -Switch scenarios allowing to adapt to all contexts -Switch over and switch back of specific objects

22 www.quick-software-line.com Switch PMEDHSWI command Environment role-swap RCV  SND to prepare replication from former target to former production system Creation of new journals receivers – positionning in the environment to give the replication starting point Audit and journaling control – start if necessary Triggers and constraints activation Identity fields management

23 www.quick-software-line.com Switch Switch Scenarios Each step is defined in an independent scenario Free commands script for a better adaptation to all sites Scenario can be executed in batch, interactive or step by step mode


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