Moving to the cloud comes with many advantages. There’s the obvious advantages: if you put all your servers or services in the public cloud, you do not need your own datacenter. Provisioning rates are typically pretty fast, so this improves the time needed to spin up a new service. Plus pretty much every cloud is based on a “pay as you use/grow” billing model, giving you predictable costs.
Different public cloud providers charge different prices for services. So what if you could use the best value components from each cloud provider? Say hello to the multi cloud.
Continue reading “Why move to one cloud, if you can move to a multi cloud?”
The Dell EMC High-End Systems Division talked about two systems. First about the VMAX All Flash, and later about the XtremIO X2. This post is about the latter one. The XtremIO X2 builds upon the foundation of the original “old” XtremIO, but also does a couple of things differently. This post will explore those difference a bit, and will also talk about asynchronous and synchronous replication.
Continue reading “XtremIO X2: easier scaling, fewer cables and metadata aware replication”
Back in October we visited Dell EMC for a few Storage Field Day 14 presentations. Walking into the new EBC building we bumped into two racks. One with a VMAX all flash system and another with a XtremIO X2. Let’s kick off the Storage Field Day 14 report with VMAX All Flash. There’s still a lot of thought going into this enterprise class storage array…
Continue reading “VMAX All Flash: Enterprise reliability and SRDF at <1ms latency”
Recently I’ve been upgrading a vSphere 5.5 environment to vSphere 6.5U1. The vCenter upgrade process is pretty bulletproof by now: the installer is pretty much completely automated. I did run into some issues during the ESXi upgrade, one of which is the fact there were some conflicting VIBs present in the old installations. This would mean the ESXi 6.5U1 upgrade would not start. Time to start hacking in the CLI!
Continue reading “Upgrading to ESXi 6.5U1: Conflicting VIBs”
Today I visited a customer to connect two RecoverPoint clusters. One RecoverPoint cluster is connected to a Unity array, the other to a VNX. After installing both clusters, we ran the RecoverPoint Connect Cluster wizard and were greeted with an “Internal Error. Contact support” error message. Awesome! Fortunately it turned out to be a pretty basic error which was easy to fix. A short story about RecoverPoint installation types in mixed-array configurations…
Continue reading “RecoverPoint Connect Cluster wizard: Internal Error, contact support”
Storage Field Day 14 is taking place next month on 8-10 November in Silicon Valley. After having to skip one Storage Field Day, I’m glad to be back at the table for this one. If you look at the event page, it might seem there’s not that many presentations going on: only 4 companies listed as of today. But don’t be mistaken: Dell EMC will have 5 presentations, so we will not be slacking!
Continue reading “Back to SFO for Storage Field Day 14!”
Last month I’ve performed a Isilon tech refresh of two clusters running NL400 nodes. In both clusters, the old NL400 36TB nodes were replaced with 72TB NL410 nodes with some SSD capacity. First step in the whole process was the replacement of the Infiniband switches. Since the clusters were fairly old, an OneFS upgrade was also on the list, before the cluster could recognize the NL410 nodes. Dell EMC has extensive documentation on the whole OneFS upgrade process: check the support website, because there’s a lot of version dependencies. Finally, everything was prepared and I could begin with the actual Isilon tech refresh: getting the new Isilon nodes up and running, moving the data and removing the old nodes.
Continue reading “Isilon Tech Refresh – Replacing old NL400 Isilon nodes for NL410’s”
If you’re remotely managing a Linux machine, you’ll probably use an SSH connection to run commands on that machine. There’s one problem with this approach: if you close the SSH connection, any long-running jobs/commands will halt. If you know a job will take a long time and you won’t be able to babysit the SSH connection, you can plan accordingly. But what if you underestimated the time a job will take, and you need to disconnect anyway? Here’s how to keep the job running AND make it home in time for dinner!
Continue reading “Linux 101: Disown long running jobs like an InsightIQ database upgrade”
While upgrading OneFS it’s important to keep the InsightIQ software version compatible with the Isilon systems. In this case, InsightIQ wasn’t updated for a while and I had to upgrade from 3.0 -> 3.1 -> 3.2 -> 4.x. The actual upgrade process isn’t too hard (it just takes a lot of time), but there’s one little prerequisite in the 3.1 -> 3.2 upgrade: a minimum free space in the root partition of 502MB. As you can see in the screenshot, I wasn’t even close to the minimum requirement. I got to 357 MB, and that’s after cleaning up redundant stuff. Time to add some more disk space and extend root partition!
Continue reading “Linux 101: Extend root partition of an InsightIQ VM”
Every once in a while you might need to replace an Isilon infiniband switch. Possibly because of a broken switch, the need for more ports, or because the old switch is.. too old. Good news: it’s a fairly straightforward job. And if your cluster has two switches, you can replace a switch at a time without outage.
Continue reading “Safely replace an Isilon InfiniBand Switch with these steps”