Tag Archives: Replication

PowerCLI and VVols Part VI: Running a Test Failover

This post I will talk about using PowerCLI to run a test failover for VVol-based virtual machines. One of the many nice things about VVols is that in the VASA 3.0 API this process is largely automated for you. The SRM-like workflow of a test failover is included–so the amount of storage-related PowerShell you have to manually write is fairly minimal.

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Semi-transparent failover with VMFS and Active/Passive Replication

So in a blog series that I started a few weeks back (still working on finishing it), I wrote about managing snapshots and resignaturing of VMFS volumes. One of the posts was dedicated to why I would choose resignaturing over force mounting almost all of the time.

An obvious question after that post is, well when would I want to force mount? There is a situation where i think it is a decent option. A failover situation where the recovery site is the same site as the production site, in terms of compute/vCenter. The storage is what fails over to another array. This is a situation I see increasingly common as network pipes are getting bigger.

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Understanding the FlashArray Replication Connection Key

A question came up in a today at work that I answered and I thought it might be a good topic for a quick blog post:

How do you change your connection key for FlashArray replication?

The question misunderstands what the connection key actually is, so let me explain.

When you connect one FlashArray to another, you need three pieces of information:

  1. The FQDN or IP for the management address of the remote array
  2. The FQDN or IP for the replication address of the remote array
  3. A connection key

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Site Recovery Manager and Raw Device Mappings (RDMs)

Somewhat surprisingly I have been getting a fair amount of questions in the past few months concerning VMware vCenter Site Recovery Manager and Raw Device Mappings (RDMs) and using this with Pure Storage. Common question is whether or not we support this (we do) but more commonly it is about how it works. There is a bit of a misunderstanding on how they differ or do not differ from VMFS management in SRM. So figured I would put a post out to explain this. Old topic somewhat, but worth reviewing for those newer SRM customers. Plus, I haven’t found a whole lot of on-point posts anywhere, so why not?

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FlashRecover replication on the Pure Storage FlashArray

Last year Pure Storage introduced built-in replication on the FlashArray 400 series in our Purity Operating Environment version 4.0. Our replication offers a variety of benefits–they center around two things. First it is completely free. There is no license charge for replication itself or by capacity. If you need to have is two FlashArrays and a TCP/IP network between the two of them to replicate over. No additional hardware to buy for the array or license packages required (all of our software is always free). Secondly, it is very easy to use–from a green field array to replicating volumes takes maybe five minutes–in reality probably far less than that. So I wanted to take some time to review how our replication is setup and how it works. I went over replication briefly when we released Purity 4.0, but I think it is time for a closer look.

replication

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Purity 4.0 Release: New hardware models, replication and more!

Ah my first official post during my tenure at Pure and it couldn’t have happened at a better time! Just in time for the Purity 4.0 release which we just announced today. While there are plenty of under-the-cover enhancements I am going to focus on the two biggest parts of the release: new hardware and replication. There are other features such as  for example hardware security token locking but I am not going to go into those in this post. So first let’s talk about the advancement in hardware!

newhardware

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Request for input: SRDF SRA Techbook for VMware SRM

As you may or may not be aware, I am the sole author of the SRDF Storage Replication Adapter for VMware Site Recovery Manager Techbook. The Techbook for those of you who haven’t used it or aren’t aware of EMC Techbooks is a implementation guide for SRDF with SRM. Best practices, how-to, hints, etc.

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