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Archived Storage Articles
21 Jan 2015
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(ZFS) Sequential Resilvering [40468]
By Roch Bourbonnais

Roch writes, "In the initial days of ZFS some pointed out that ZFS resilvering was metadata driven and was therefore super fast : after all we only had to resilver data that was in-use compared to traditional storage that has to resilver entire disk even if there is no actual data stored. And indeed on newly created pools ZFS was super fast for resilvering.

But of course storage pools rarely stay empty. So what happened when pools grew to store large quantities of data? Well we basically had to resilver most blocks present on a failed disk. So the advantage of only resilvering what is actually present is not much of a advantage, in real life, for ZFS..."
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18 Jan 2015
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Using the Right Tool for the Job [40467]
By Rob Giltrap

Rob writes, "You wouldn't hammer a screw or screw a nail, you would use the right tool for the job. That's the elegance of the ZFS Storage Appliance, it simply uses the right tools for the jobs it needs to do.

The Hybrid Storage Pool within the ZFS Storage Appliance has three different caches, using three different technologies to perform three different jobs. I'll explain each in a little detail below:..."
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07 Jan 2015
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ZFS Encryption in Oracle ZFS Storage Appliance [40294]
By Darren Moffat

Darren writes, "With the 2013.1.3.0 (aka OS8.3) release of the software for the Oracle ZFS Storage Appliance the underlying ZFS encryption functionality is now available for use. This is the same ZFS encryption that is available in general purpose Solaris but with appliance interfaces added for key management.

I originally wrote the following quick start guide for our internal test engineers and other developers while were developing the functionality and since the functionality is now available I thought I'd share it here..."
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02 Dec 2014
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Scream Safely! Introducing ZFS Storage ZS4-4 and OS8.3 [39672]
Turbocharged storage!!!

Bob Handlin writes, "That's the best way to describe our Oracle ZFS Storage ZS4-4 (released today). It's our 4th generation high-end Oracle ZFS Storage Appliance, and it comes with our just-released OS8.3 software. This new platform uses the latest hardware technology, and combined with OS8.3, doubles the performance of the record-setting previous generation, and also offers new innovations in security and Oracle Database 12c analytics.

In short, it's a beast..."
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02 Dec 2014
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Oracle Unveils Flagship Oracle ZFS Storage ZS4-4 NAS System [39679]
with Extreme Performance and Innovations for Oracle Database 12c

Oracle's latest-generation NAS storage system, Oracle ZFS Storage ZS4-4, enables customers to significantly accelerate application performance and dramatically improve operational efficiencies. Co-engineered with Oracle Database 12c, Oracle ZFS Storage ZS4-4 is the industry's only storage system with analytics for pluggable databases. It doubles previous generation performance to enable faster time to actionable intelligence and smarter, more competitive business decisions. Oracle ZFS Storage ZS4-4 also provides high-level protection against security breaches with its fine-grained, simple, cost-efficient encryption capabilities...
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14 Nov 2014
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Designing a Robust Deployment Architecture for Storage Repositories [39292]
By PoorFrodo

PoorFrodo, an Oracle blogger, writes, "Getting your storage repositories right is one of the more important aspects of planning and deploying Oracle VM. Throwing everything into one or two different storage repositories is not very robust nor is it conducive to backups, routine maintenance, high availability or disaster recovery. Conversely, allocating a storage repository for each individual Oracle VM guest is not scalable or practical.

You need to put some thought into the way you design and deploy Oracle VM storage repositories to gain maximum flexibility, scalability and recoverability. So, here are a few things to think about..."
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