In my previous post I described how to reformat an Isilon node if for some reason the cluster creation is defective. After we got our new Gen 6 clusters up and running, we ran into another peculiar issue: the Isilon nodes lose network connectivity after a reboot. If we would then unplug the network cable and move it to a different port on the Isilon node, the network would come online again. Move the cable back to the original port: connectivity OK. Reboot the node: “no carrier” on the interface, and no connectivity.
While installing a new Dell EMC Isilon H400 cluster, I noticed node 1 in the chassis was acting up a bit. It allowed me to go through the initial cluster creation wizard, but didn’t run through all the steps and scripts afterwards. I left the node in that state while I installed another cluster, but after two hours or so, nothing had changed. With no other options, I pressed Ctrl + C: the screen became responsive again and eventually the node rebooted. However, it would never finish that boot, instead halting at “/ifs not found”. Eventually, it would need a reformat before it would function properly again…
Our company recently replaced a lot of VNX storage by new Dell EMC Unity all-flash arrays. Since we are/were primarily a VMware hypervisor house, we decided to go ahead and create the new LUNs as VMware VMFS (Block) LUNs/datastores. This however resulted hitting us a weird and unexpected replication limit at 64 sessions.
I recently deployed a new 32TB Data Domain DD3300 system. The initial configuration is easy and familiar enough. Connect to the system via the serial cable, setup iDRAC, and run the initial configuration wizard. Afterwards the rest of the configuration can be performed via SSH and/or the GUI.
While continuing with the configuration, I noticed I could not create an aggregate Ethernet interface. No LACP or Etherchannel! So what if my Ethernet interface goes down, for whatever reason?
Back at Storage Field Day 16 in Boston, Zerto presented their VM replication software. It’s a block level, continuous hypervisor based replication, using a journal to log I/O in a VCR-like fashion. This enables you to rewind to any point in time that’s covered in the journal, and recover your VMs to that exact state. Zerto’s plans are a bit grander than “just VM Replication” though… they aim to cover the complete IT Resiliency market.
Dr. J. Metz talked with us about NVMe at Storage Field Day 16 in Boston. NVMe is rapidly becoming one of the new hypes in the storage infrastructure market. A few years ago, everything was cloud. Vendors now go out of their way to mention their array contains NVMe storage, or is at the very least ready for it. So should you care? And if so, why?
SNIA’s mission is to lead the storage industry worldwide in developing and promoting vendor-neutral architectures, standards and educational services that facilitate the efficient management, movement, and security of information. They do that in a number of ways: standards development and adoption for one, but also through interoperability testing (a.k.a. plugfest). They aim to help in technology acceleration and promotion: solving current problems with new technologies. So NVMe-oF fits this mission well: it’s a relatively new technology, and it can solve some of the queuing problems we’re seeing in storage nowadays. Let’s dive in!
A few week ago we visited Dell EMC in Boston for Storage Field Day 16. Susan Sharpe presented CloudIQ to us. If you’re unfamiliar with CloudIQ: it keeps track of your storage system performance, health, capacity and notifies you in case of any anomalies. If you’ve got a Dell EMC Unity storage system, you can already use it for free. And it’s also being actively developed, so expect many new features to come into production over time!
Yes, I’m sorry about the title too. But also glad to announce I’m shipping up to Boston for Storage Field Day 16 this week! Just ignore the fact I’m not on a ship but on a train for now, and all should be well… Next stop is AMS, then a direct flight to BOS. It’s going to be a slightly shorter, two-day Storage Field Day this time around. But that doesn’t mean we’re going to receive a lot less content!
Last week I’ve attended Dell Technologies World 2018 in Las Vegas. I was invited by Dell Technologies via the influencer program, which basically means we get access to the same content as the press or analysts. I’ve spent the weeks alternating between general keynotes, briefings, interviews and catching up with friends and colleagues. In this post I’ll try and summarize some of the main topics of the Dell Technologies World 2018, focusing on what appealed most to me.
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.