March 2014 Archives

Actifio gets funding, but what's the future for a good idea in storage?

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Actifio this week announced it had gained another $100m in funding, adding to a previous round of $107m, and according to Ash Ashutosh, founder and chief executive of Actifio, that pushes its market valuation to $1bn.

Actifio's Copy Data Storage Platform is the latest iteration of what we might call file virtualisation.

In the Actifio scheme numerous, isolated, many-times-duplicated versions of files are rationalised into the smallest number of copies required for the various requirements of the organisation - file access, backup, archiving and/or disaster recovery.

Whereas most businesses suffer the unwanted and unplanned multiplication of files as users copy, email, etc information between them, Actifio slims data down to a "golden copy", which is in practice the nearest one to the application that created or updated it.

Other copies are held elsewhere. They may be needed in production by other geographically located datacentres, or may be at different stages in their lifecycle, being backed up or archived, for example, and are updated from the golden copy so that all are eventually synchronised. Copies are retained with snapshot functionality, ie they can be rolled back to any point in time where changes were made.

Actifio targets the data protection and disaster recovery market and hopes to replace existing replication products, including at the storage array. It supplies the product as software or as an appliance on an x86 server. When customers deploy it Actifio discovers all the apps in the environment and policies can be set for their data - how many copies, on what tier of storage media it should be kept, etc.

It all sounds like the way you'd do file storage if you were thinking it up from scratch.

But there could be obstacles.

For a start, with 300 customers gathered over five years it hasn't exactly set the world on fire. And while the Actifio scheme is a clever one that can save a lot of disk space, re-architecting an existing environment might be a big ask for a lot of customers and a nerve-jangling prospect.

Perhaps that's why more than half its customers have deployed Actifio where data is clearly separated from production data - 6% use it for analytics and 17% for test and dev - or into relatively new, greenfield, environments at the 30% of its customers who are service providers.

Then there's the fact that there are many vested interests in storage that work against the idea of reducing the need for disk capacity. Ashutosh says the market it is playing in is worth $46bn but how much of that will take a swipe at disk vendors' revenues?

Whatever happens, the future for Actifio looks like one of going public with an IPO or being bought. Let's hope if it's the latter that it's not bought by a disk array maker that puts it out to pasture. 

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BYOD backup: A looming Bring-Your-Own-Disaster?

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Recently I blogged my thoughts on why mainstream backup products don't protect BYOD devices - laptops, tablets, smartphones etc - and came to the conclusions a) BYOD backup is a different beast to mainstream fixed source backup and is only provided by some specialised suppliers, and b) many BYOD users are probably using Dropbox et al.

However, it turns out I was off the mark, especially on the second point. In fact most organisations are not backing up these portable devices at all. That's the conclusion to be drawn from last spring's SearchStorage.com purchasing intentions survey. It found that more than two thirds of tablets and smartphones and nearly half of all laptops are not backed up (see chart below).

I banged on about potential BYOD compliance risks to this in my previous blog. That, you would have thought, would be sufficient impetus for users to rectify this situation. Maybe they want to. But, even if the desire is there enterprise and midrange backup products simply don't protect these types of device.

All of which leads to the conclusion that the backup suppliers really are missing a trick. It is quite literally a huge unfulfilled market. If the backup software makers had BYOD backup functionality in their products they could deploy one of IT marketing's greatest weapons - fear. So, why they don't remains a mystery.


BYODbackup.jpg

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Cold Storage, Helium and HAMR. Can they save the spinning disk HDD?

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While super-fast flash storage has hogged the headlines, recent months have seen the available capacity of spinning disk HDDs increase to 6TB with the shipping since last September of HGST's helium-filled SAS and SATA 3.5" HelioSeal drives. This is a 50% increase on the previously available 4TB drives.

HGST has been able to do this because it has got a jump on its rivals by patenting a method of sealing helium into drives instead of air. Helium, famously, due to its ability to produce a funny voice when sucked from a party balloon, is about 1/7th the density of air.

This reduces friction against spinning components in the HDD, when they start up and as they run, and brings, says HGST - which thinks it has an 18 month/two year lead on the competition - a 36% decrease in power usage plus, crucially for capacity, the ability to run seven (thinner) platters in the drive rather than the usual five.

As if a 50% boost in capacity was not enough, we're looking at the possibility of HDDs shipping with between 7TB and 10TB (with helium) by the end of this year and into 2015.

That's down to the adoption of new ways of writing data to the surface of platters and consequent increases in areal density as the HDD makers move from the current standard of perpendicular magnetic recording (PMR) to the next generation shingled magnetic recording (SMR).

Then, two or three years down the road we're looking at a tripling of current HDD capacities to around 12TB (with helium) with heat assisted magnetic recording (HAMR), which does what it says on the tin really, by heating up the surface of the drive and increasing the density of its storage capabilities.

It all sounds like great news until you think of the RAID rebuild times. These can currently stretch to days for 4TB drives that use the parity-based RAID levels (5 and 6) and will only get worse with capacities that double or triple that.

"It's not good," says HGST's EMEA sales VP Nigel Edwards. "As capacities increase so will RAID rebuild times. It is an issue, but we are seeing huge demand and are being pushed for larger capacity drives."

According to Edwards the future of such ultra-high capacity HDDs is in "cold storage", ie archiving that sacrifices access times for ultra-low cost per TB. Here, if HDD makers can bring the cost per TB price of spinning disk down to that of tape, service providers will offer data archive services using vast amounts of disk drives that are spun up as customer access needs dictate.

It's a plausible case. And it'll be interesting to watch how it plays out. Because, as the HDD makers drive for ever-higher capacity disk the tape makers too - with a head start in terms of capacities/densities - are also looking at more archive-friendly technologies, such as LTFS and SpectraLogic's Black Pearl implementation.

Oft-heard soundbite used to proclaim "tape's is/isn't dead". Now it seems there's a current of "disk isn't dead" emerging and finding use cases to ensure its survival.

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This page is an archive of entries from March 2014 listed from newest to oldest.

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