Tag: "Disk Library"

Comprehensive Capacity Optimization – Deduplication 2.0


Technology is great isn't it?  When someone thinks they have a new idea on the same old technology foundation they call it "X 2.0".  I have been watching the banter between analysts and vendors (specifically NTAP’s Dr. Dedupe and Permabit’s CEO Tom Cook) on the topic of Deduplication 2.0 and it is my belief that the proverbial boat is being missed (since we are using water analogies).  I have been watching these guys hash it out for the past few weeks and decided I have to jump in.  I find the real value to these conversations is the value to the end user.  At the end of the day, it doesn't really matter who 'coined' or 'invented' a term (like deduplication 2.0) but what does matter is if  the term actually helps describe a technology and how that technology can be leveraged to make things better in the data center.  We should focus on the implications of this new generation of deduplication - ‘deduplication 2.0’.

In May I delivered a presentation to a number of EMC customers on the topic of Data Deduplication 2.0 - Comprehensive Capacity Optimization.  The point of my presentation was simple (and keep in mind this was before the Data Domain acquisition); there are a number of capacity optimization technologies/capabilities that are available to customers today.  Originally these deduplication technologies were used primarily for backup purposes but slowly, deduplication is making its way into primary storage. Deduplication in primary storage makes a lot of sense FOR DATA THAT IS STATIC.  Why only static data?  Static data is data that isn't used frequently (doesn't mean it's not important, it just simply is not accessed often); because access to this data is infrequent, the performance requirements for this data is less than that of active data. Remember; nothing in IT is free.  If I deduplicate data, in order to use it, I must ‘rehydrate’ it and thus there is a performance implication so I want to be careful where I deduplicate data so as not to inhibit performance on production data.

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Oct 07, 2009 | 1 comment View Post

Process vs. Technology


The hardest thing to change inside IT is not technology, it is process!  I say this because all too often there are technologies available that provide a far superior solution to a complex IT problem, however, this new technology may not fit into your existing business process.  Need proof?  Let's take data protection as an example.  Did you know that VTLs (virtual tape libraries) and data deduplication technologies came out at the exact same point in history, 10 years ago?  Which technology had faster market adoption?  VTLs of course because implementing them didn't cause a major disruption in processes.

Let's take a look at a simple backup environment.  We won't worry about archiving or compliance for the moment, just operational backup and recovery.  Today's backup has a number of complexities.  There are some data sets that have weekly full backups and daily incremental backups.  There are some data sets that sit under applications that, for faster recovery capabilities and simplicity, require daily full backups.  Once the backups are done, in order to ensure true data protection reliability, a process of checking the backup logs to ensure every system was successfully protected begins.  Next, backup tapes are either created (if it is a disk based backup) or tapes are taken from the library and moved to a transportable box, hopefully a secure box.  Finally, a third party vendor comes to pick up the tapes and take them off site for safe-keeping.  Additionally, if the data is backed up using encryption, then the encryption keys are also kept off site for security purposes.

 Customers face these standard backup challenges:

1) Backups take too long and cannot meet backup windows as a result of too much data.

2) Backups fail due to poorly configured (networked) backup environments.

3) Backups at remote offices are 'unreliable'. (Don't follow best practices set in the data center.)

a. No one with the appropriate skill set is available to monitor these backups.

b. No one with the appropriate skill set is available to troubleshoot these backups.

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May 01, 2009 | 1 comment View Post

Road to Recovery


Our domain, Backup & Beyond was the tagline for Avamar Technologies, a company EMC acquired in November of 2006.  This tagline was very fitting from a data protection standpoint because Avamar utilized a traditional client / server architecture to protect data but with a twist.  Avamar utilizes a more intelligent client side agent that provides source based, variable block deduplication to enable the most efficient backups available in the market for more than 80% of a data centers data.  Avamar also leverages this same technology to replicate this data between disk based backup targets there by dramatically reducing the reliance on tape.  This new technology, that has enabled new processes is taking backup beyond.

The title of our blog, Road to Recovery - well, like every good title it is a play on words and trust me, as with every title it took us a while to come up with it.  That said, the industry has been talking about the fact that backup is really about recovery.  The same can be said for other data protection tools.  This is why our goal is to talk about methodologies (technologies and processes) that help you to recover data.  When IT professionals are polled, they often say that data protection (backup) is still the number one issue they have in the data center.  We say it is time to stepup and admit it and start the 'Road to Recovery' when it comes to your data protection environment.

Let us know what your challengs are, we are here for you, your support system and we welcome you comments and questions.

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Feb 14, 2009 | 0 comments View Post