Archive for 28th April 2016

Cohesity Announces Cloud Integration Services

With the release of v2.0 of their OASIS platform, as presented as Storage Field Day 9 recently, Cohesity’s development team have continued churn out new features and data services at a significant rate. It seems that they are now accelerating towards the cloud (or should that be The Cloud?) with a raft of cloud integration features announced today!

There are three key new features included as part of this, called CloudArchive, CloudTier and CloudReplicate respectively, all of which pretty much do exactly what it says on the tin!

CloudArchive is a feature which allows you to archive datasets to the cloud (duh!), specifically onto Google Nearline, Azure, and Amazon S3. This would be most useful for things like long term retention of backups without taking up space on your primary platform.

CohesityCloudFeatures.png

CloudTier extends on-premises storage, allowing you to use cloud storage as a cold tier, moving your least used blocks out. If you are like me, you like to understand how these things work down deep in the guts! Mohit Aron, Founder & CEO of Cohesity, kindly provided Tekhead.it with this easy to understand explanation on their file and tiering system:

NFS/SMB files are mapped to objects in our system – which we call blobs. Each blob consists though of small pieces – which we call chunks. Chunks are variable sized – approximately ranging from 8K-16K. The variable size is due to deduplication – we do variable length deduplication.

The storage of the chunks [is] done by a completely different component. We group chunks together into what we call a chunkfile – which is approximately 8MB in size. When we store a chunkfile on-prem, it is a file on Linux. But when we put it in the cloud, it becomes an S3 object.

Chunkfiles are the units of tiering – we’ll move around chunkfiles based on their hotness.

So there you have it folks; chunkfile hotness is the key to Cohesity’s very cool new tiering technology! I love it!

chunkfilehotness

With the chunkfiles set at 8mb this seems like a sensible size for moving large quantities of data back and forth to the cloud with minimal overhead. With a reasonable internet connection in place, it should still be possible to recall a “cool” chunk without too much additional latency, even if your application does require it in a hurry.

You can find out more information about these two services on a new video they have just published to their youtube channel.

The final feature, which is of most interest to me is called CloudReplicate, though this is not yet ready for release and I am keen to find out more as information becomes available. With CloudReplicate, Cohesity has made the bold decision to allow customers to run a software only edition of their solution in your cloud of choice, with native replication from their on premises appliances, paving the way to true hybrid cloud, or even simply providing a very clean DR strategy.

This solution is based on their native on-premises replication technology, and as such will support multiple replication topologies, e.g. 1-to-many, many-to-1, many-to-many, etc, providing numerous simple or complex DR and replication strategies to meet multiple use cases.

Cohesity-CloudReplicate.png

It could be argued that the new solution potentially provides their customers with an easy onramp to the cloud in a few years… I would say that anyone making an investment in Cohesity today is likely to continue to use their products for some time, and between now and then Cohesity will have the time to significantly grow their customer base and market share, even if it means enabling a few customers to move away from on-prem down the line.

I have to say that once again Cohesity have impressed with their vision and speedy development efforts. If they can back this with increase sales to match, their future certainly looks rosy!

Disclaimer/Disclosure: My flights, accommodation, meals, etc, at Storage Field Day 9 were provided by Tech Field Day, but there was no expectation or request for me to write about any of the vendors products or services and I was not compensated in any way for my time at the event.

The Tekhead Top 10 Tech Podcast Perfect Playlist Picks

I reckon that’s about enough alliteration click bait for now! If you are either a regular commuter or someone who travels a lot for work, tech podcasts are one of the best ways of staying up to date with the industry and do training without having to necessarily spend hours every week reading blog posts or El Reg.

More fool me of course, I actually do both!

As someone who is fortunate enough to work from home most of the time though, the majority of my tech podcast listening happens either when I go out for a daily walk at lunch time, when I’m traveling to client meetings, or when I’m binging on podcasts whilst getting DIY stuff done at home (it passes the time so much quicker!).

Either way, I consume a fairly large chunk of tech podcasts, and as the last time I posted a list was over two years ago, I thought I would update and re-post it here.

Tech Podcasts - Tech Podcast Meme

To be honest, not a huge amount has changed in terms of sources, though there are one or two new shows which were of such awesome quality, I had to somehow find time to squeeze them in! It’s also worth noting that I still continue to find BeyondPod as one of the most reliable and easy to use podcast consumption apps for Android!

All of these podcasts are great, but the following table is in the priority order I listen to them – you may read that as you will! 🙂

Recommended Tech Podcasts

Podcast

Published

 

Notes

Speaking in Tech

Weekly – Wednesdays

Irreverent, funny, NSFW, but thoroughly informative and entertaining consumer and enterprise tech news and interviews! Greg, Eddie and Sarah are like the Fox News of tech podcasting, only more sensational! 😉
In Tech We Trust

Weekly – Mondays

Unofficially competing hard with Speaking in Tech to be the best news focussed tech podcast out there! Unmissable!

GreyBeards on Storage

Monthly Satisfying my inner storage nerd on a monthly basis, Howard and Ray talk to existing and startup storage vendors about their products, as well as industry trends. I always learn something new listening to this show!

vSoup

Irregular Though sporadic of late, vSoup feels like a comfortable chair you sit in and chat about IT with your mates. Insightful at times, and always entertaining!

vNews

Irregular Run by two fellow London VMUG members, I’d say this could almost be described as a quintessentially British view of tech industry news. Well worth listening to!

Eigencast

Irregular but often Well known industry veteran Justin Warren, talks with companies and other industry figures about the business of IT. A very unique perspective, which those of an engineering mindset sometimes have a tendency to downplay!

VUPaaS

On hiatus? Although this seems to have fallen by the wayside, I am hoping this user and use-case focused show will make a return soon!

Around the Storage Block

Irregular

I haven’t missed an episode of Calvin’s HP vendor show in years, and though I did recently feel the need to stop one half-way through due to FUD overload, it still continues to be a great source of information.

Packet Pushers

Multiple per week

I’m no network guy, but if I have the time, I always try to catch a few episodes and learn something new. I’m never disappointed!

Professional VMware Brownbag

Weekly

I generally dip in and out of the amazingly awesome vBrownbag tech podcast content depending on what I am studying at the time. I have a massive amount of respect for the effort these guys put into providing free training for the community! Just brilliant!

Preview – Open Homelab Project at #LonVMUG – 14th April 2016

So this is just a very brief post to firstly say don’t forget it’s the London VMUG on 14th April 2016, at Tech UK (10 Saint Bride Street, EC4A). There are a load of really interesting sessions coming up, both vendor and community.

For example:

  • We have a keynote from Luca Dell’Oca who provided one of the best non-vendorised vendor sessions I have ever seen at a VMUG (his session title this time sounds like he may be looking to up the ante!)!
  • We have loads of sessions on VSAN including the 6.2 updates (also see the Storage Field Day 9 sessions here for a deep dive on that).
  • We even have a session from the London VMUG leadership team’s “Darth Vader” himself, Simon Gallagher, talking about App Volumes!

It should be an awesome day!

agenda-lonvmug-April-2016.png

The keen eyed among you may also notice that I have a session in the list as well…

If you want to come along and be part of a slightly unique session, never been seen before, never been done before, and will probably never be done again (especially if when all goes pear shaped!), then feel free to come along to the Open Homelab project session I will be attempting to herd / steer / keep on the rails!

I suggested a few months ago to Simon G that we do some roundtable sessions at the London VMUG and volunteered to run some as an experiment. These are my favourite sessions at the UK VMUG as you get a dozen or so people round a table and chew the fat on a specific subject area.

It turns out that we don’t actually have anywhere in our new venue to run this session for a small group, so instead, it’s been converted into a “square table”, i.e. “no table” session in one of the standard rooms instead!

Running a roundtable with a room full of people is certainly going to be a challenge, a bit of an experiment, and worst case scenario it all falls apart and we never do it again! Yay! But, hopefully it will actually be a really worthwhile session, and I plan to share the results here afterwards as kind of a crowdsourced homelab advice tree or something! To be honest with less than two weeks to go I haven’t really figured out the details yet, but rest assured by a week on Thursday, I will at least have the title decided!

planning

Whatever happens it should be interesting! So if you want to share your homelab requirements with the group and get some advice and tips on how to design and build it, or if you want to tell us how awesome your lab is already and why you chose to build it like that, please do come along to the session and join in! 🙂

Register here:
London VMUG Meeting Registration – Thursday, 14th April 2016

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