All-Flash is changing your hardware support

A couple of weeks back at Episode 29 of the In Tech We Trust podcast we talked about the the failure rate of flash drives. Apparently, when handled by smart controllers, it is far less likely than we would think. Some DMs with Vaughn Stewart (Chief Evangelist at PureStorage) later we came to the following statement: The failure rate of flash drives at PureStorage, 2.5 years after GA, is less than 10 in 1000’s of deployed drives. This is a truly impressive number. It also helps understand why SolidFire announced “an unlimited drive wear guarantee valid for all systems under

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Production storage needs new benchmarks

Dragster Benchmarking I’ve ranted on this more than once. Benchmarks are 99% of the time utter bull… and tell you nothing about what the solution’s real possibilities are, let alone what they mean to your environment. The dragster benchmarks (i.e. SPC-1) are just a show-off competition with little to no value to you. Allow me to bring up a couple of points why; Generally speaking the dragster benchmark is based on 100% 4k-reads. Let me assure you that there is not a single system out there – certainly not yours – that does 100% 4k reads, let alone 4k in

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vSphere 6 NFS4.1 does not include parallel striping!

Oh how happy are we that VMware FINALLY decided to add support for NFS4.1 especially since the NFS3 client’s major problem has always been single-session connectivity. HOWEVER; going over Chris Wahl’s – extensive – coverage on this news item I did miss a key ingredient we were actually waiting for in NFS4.1: support for pNFS (parallel NFS). Chris mentions the following improvements from vSphere 5.5 to 6: Authentication with Kerberos In-band, mandatory, and stateful server side locking Session trunking (true NFS multipathing) Greater error recovery So what does this session trunking do for us and what not?  I tried to simplify the story

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Flipping the Cloud Paradigm – part II

A little over a year ago I wrote “Are you a cloud paranoia”. The baseline of the post was that people don’t trust Public Cloud – mostly rightfully so – to own all their business information. We briefly touched on it in last week’s episode of In Tech We Trust as well due to Microsoft Azure (blob storage) going titsup again for more than 11hrs. But it’s the last part of that blog I still think of a lot. I proposed the idea of flipping the Cloud Paradigm and running your total production in (public) clouds but using your local infrastructure as your

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My checkbox is bigger than your checkbox!

This morning Josh Odgers from Nutanix published a blogpost where he rightfully pointed out that having support for a specific feature(set) doesn’t necessarily mean the same for all vendors (link). In this case we are talking about NAS-VAAI. The example given is that there are a lot of vendors that have support for NAS-VAAI but Nutanix is the only one that supports, and is certified for all primitives. Point well taken Josh and luckily there is always the HCL to check that out as you showed. note: the same applies to VAAI for block primitives! Of course when one rep

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vSphere Storage Array FEEDBACK requested

I am working on a lengthy post/presentation related to UNMAP on all levels of the stack (from Guest Volume to Physical disk). During my research I have noticed that there is no way for me to find out through the VMware HCL which arrays support T10 UNMAP. Therefor I need your help. If you find 5 minutes of your time I’d love to get a few details from your array. Vendor + Model + Firmware vSphere Version VAAI Status (screenshot 2) Thin Provisioning Status (screenshot 2) Delete Status (screenshot 1) Screenshot 1: Look up datastore device name: # esxcli storage

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