- September 25, 2020
HADR
Preparing for the Worst
At a previous job, one of our systems notified us there had been a disk failure. I was not too concerned, as we had redundancy built into the disk array. In short order; however, we had several other disks fail, and the system came down hard. We would later find out there was a manufacturing […]
Understanding HDS Replication with TrueCopy and Universal Replicator
When I started working with modern HDS storage systems such as the VSP and HUSVM, I became familiar with the remote replication abilities present on these systems. Similar to my last entry on NetApp’s SnapMirror and SnapVault replication abilities, HDS storage has a few choices for remote replication that go by different names. In particular, […]
NetApp Remote Replication: SnapMirror or SnapVault?
Recently, I’ve been taking part in discussions involving NetApp hardware and its backup solutions. When it comes to NetApp’s remote replication solutions SnapMirror and SnapVault, there can be confusion as to what each do and which best suits their needs. Although similar in name, SnapMirror and SnapVault differ in abilities and target different use cases, […]
iCluster and Mobility Part 4: Deploying the Mobile Monitor
In our last post we covered how to install Apache Tomcat on IBM i. Now we need to let Apache know about the Mobile Monitor. This means the WAR (Web application Archive) file needs to be deployed in Apache Tomcat. WAR files are like a zip file used to package a collection of JAVA Server […]
iCluster and Mobility Part 3: Apache Tomcat for Dummies
The iCluster Mobile Monitor as provided in iCluster 7.1 TR23 is basically a collection of JAVA classes and JAVA servlets that connect to the IBM i server running iCluster. JAVA servlets are JAVA programs that extend the capabilities of a server. Although servlets can respond to any types of requests, they most commonly implement applications […]
iCluster and Mobility Part 2 Getting Started
It’s 1:54am on a Tuesday morning, and dreams of your next summer vacation are swimming through your subconscious mind. Suddenly the phone rings. You kick the cat or dog off the bed, check the number on the call display and note it’s your office. Sighing, you groggily grab the receiver, glance at the clock and […]
iCluster and Mobility Part 1
How important is mobility in our everyday lives? It turns out mobility is very important. Did you know that according to data from digital analysts at GSMA Intelligence there are now more active mobile devices in the world (7.22 billion) than people (7.1 billion)? Of course cell phones make up a vast proportion of these […]
iCluster Object Counts Report
In our last post on iCluster Reports at iCluster 7.1 TR2 we cover the Object Counts Report. This is a great report that gives you an idea of what is actually on your system and can be used to help configure iCluster. The Object Counts report is accessed through GO DMREPORTS Option 12 or the […]
iCluster Cross-Library Logicals Report – A Catch 22!
If you have iCluster 7.1 TR1 or earlier, you are governed by a restriction in iCluster that has existed since the product was first introduced. Physical files and their associated logical files must reside in the same replication group. If you have good developers who keep all of the logicals and physicals in the same […]
iCluster Journal Analysis Report Part 5 – Running the Command
If you have been following the last 4 posts, you now know everything about the journal analysis report except for how to run the command. In this post we will cover running DMANZJRN. Using go DMREPORTS choose option 10 Journal analysis reports or just CHGCURLIB ICLUSTER and prompt the DMANZJRN command. You will see the […]
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