HP Storage Portfolio, …a simple decoder

Friday, November 09, 2012

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Storage Architecture Key Concepts

Primary Storage (Active)

Secondary Storage (Inactive)

Nearline Storage (Backups)

Offline Storage (Archive)

Software

Software

“Mission Critical”, “Business Essential”, or “Online” importance (See Next Page).Block/Structured (SAN) or File/Unstructured (NAS).Specified performance requirements/TIERs.Frequent, short term RPOs.Sync / Async replication.Typically random I/O patterns.

Local scheduled software-driven archives of Active data files, typically used for data retrieval purposes.Medium/long term life cycle.Less frequent, medium/long term RPOs.Typically a “streaming” workload.Data often deduplicated.

Regular, short/medium-term offline and off-site copies of Active Data typically used for Disaster Recovery purposesDefined regular Remote Recovery PointsSync / Async Replication

Remote scheduled backups/archives of Active Data files.Infrequent, long term RPOs.

Synchronous / Asynchronous ReplicationOn-PremiseOff-Premise

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On-PremiseOff-PremiseAsynchronous Replication

RPO – The “recovery point objective” (RPO) is the maximum tolerable period in which data might be lost from an IT service disruption or component failure.RTO – The “recovery time objective” (RTO) is the duration of time and a service level within which a business process must be restored after a disaster (or disruption) in order to avoid unacceptable consequences associated with a break in business continuity.

StoreServ / StoreVirtual / StoreEasy

StoreServ / StoreVirtual / StoreEasy

StoreOnce

StoreOnce / StoreEver

I = C + P + F + A…

I = InvestmentC = CapacityP = PerformanceF = FeaturesA = Availability