2096 Turn up the Power - External Disk and Hardware Replication on i... A Case Study! - 2024-10-21 IBM TechXchange.pdf

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1、Steven WolkSteven WolkSWolkPCRSWolkPCRTurn up the Power:Turn up the Power:External Disk and Hardware External Disk and Hardware Replication on Replication on i i.A Case Study!A Case Study!IBM TechXchange 2024Session 2096Case studyCase studyFrom oldto newWhere we came fromWhere we came fromPrimaryPri

2、maryPower 7Power 7IBM IBM i i V6R1V6R1Internal DASDInternal DASDHA/DRHA/DRPower 7Power 7IBM IBM i i V6R1V6R1Internal DASDInternal DASDMIMIXMIMIX70+Smaller 70+Smaller IBM is V5R4 IBM is V5R4 and V6R1and V6R1Located in Located in retail stores,retail stores,warehouses,warehouses,etcetcWhat we hoped to

3、 gainWhat we hoped to gainUp-to-date OS and other softwareIBM software supportReduced hardware support costsImproved performance,especially I/OMore reliable replication with less human involvementBetter and faster backupsSo why did we wait so long?So why did we wait so long?n-2What we migrated toWha

4、t we migrated toPower 9Power 9IBM i 7.5IBM i 7.5Power 9Power 9IBM i 7.5IBM i 7.570+Smaller 70+Smaller IBM is IBM is 7.4 and 7.57.4 and 7.5Located in Located in retail stores,retail stores,warehouses,warehouses,etcetcFS7200 FS7200 SSDsSSDsFS7200FS7200SSDsSSDsFull System ReplicationP PR RI IMMA AR RY

5、YHHA A/D DR RReplication choicesReplication choicesSoftwareHardwareLeverages local or remote journals to apply transactions to HA/DR systemReplicates bytes changed on disk and is unaware of what these bytes representEx:MIMIX,iTeraHardware replication choicesHardware replication choicesSynchronousI/O

6、 on HA/DR before primary50 mile limitMay impact production performanceHardware replication choicesHardware replication choicesAsynchronousI/O on HA/DR after primaryNo distance limitReplication trails production and may fall behindHardware replication choicesHardware replication choicesChange volumes