I recently came across a piece by Carl Brooks over at IT Tech News  Daily that caught my eye, title was Cloud Storage Often  Results in Data Loss. The piece has an effective title (good for search engine:  SEO optimization) as it stood out from many others  I saw on that  particular day.


Industry Trend: Cloud storage


What caught my eye on Carls piece is that it reads as if  the facts based on a quick survey point to clouds resulting in data loss, as opposed to being an opinion that some cloud usage can result in data loss.


Data loss


My opinion is that if not used properly including ignoring best practices, any  form of data storage medium or media could result or be blamed for data loss. For some people they have lost data as a result of using cloud  storage services just as other people have lost data or access to information on other storage mediums  and solutions. For example, data has been lost on tape, Hard Disk Drives (HDDs), Solid State Devices (SSD), Hybrid HDDs (HHDD), RAID and non RAID, local and  remote and even optical based storage systems large and small. In some cases,  there have been errors or problems with the medium or media, in other cases  storage systems have lost access to, or lost data due to hardware, firmware, software, or configuration including due to human error among other  issues.


Data loss


Technology failure: Not if,  rather when and how to decrease impact
Any technology regardless of what it is or who it is from along with its architecture design and implementation can fail. It is not if, rather when and  how gracefully along with what safeguards to decrease the impact, in addition to containing or isolating  faults differentiates various products or solutions. How they automatically repair and self heal to keep running or support  accessibility and maintain data integrity are important as is how those options are used. Granted a failure may not be technology related  per say, rather something associated with human intervention, configuration,  change management (or lack thereof) along with accidental or intentional activities.


Walking the talk
I have used public cloud storage services for several years including  SaaS and AaaS as well as IaaS (See more XaaS here) and knock on wood, have not  lost any data yet, loss of access sure, however not data being  lost.


I follow my advice and best practices when selecting cloud  providers looking for good value, service level agreements (SLAs) and service level objectives (SLOs) over low cost or for free services.


In the several years of using cloud based storage and services there  has been some loss of access, however no loss of data. Those service disruptions  or loss of access to data and services ranged from a few minutes to a little  over an hour. In those scenarios, if I could not have waited for cloud storage  to become accessible, I could have accessed a local copy if it were available.


Had a major disruption occurred where it would have been several  days before I could gain access to that information, or if it were actually  lost, I have a data insurance policy. That data insurance policy is part of my  business continuance (BC) and disaster recovery (DR) strategy. My BC and DR  strategy is a multi layered approach combining local, offline and offsite as  along with online cloud data protection and archiving.


Assuming my cloud storage service could get data back to a given  point (RPO) in a given amount of time (RTO), I have some options. One option is  to wait for the service or information to become available again assuming a  local copy is no longer valid or available. Another option is to start  restoration from a master gold copy and then roll forward changes from the  cloud services as that information becomes available. In other words, I am using  cloud storage as another resource that is for both protecting what is local, as  well as complimenting how I locally protect things.


Minimize or cut  data loss or loss of access
Anything important should be protected locally and remotely meaning  leveraging cloud and a master or gold backup copy.


To cut the cost of  protecting information, I also leverage archives, which mean not all data gets  protected the same. Important data is protected more often reducing RPO  exposure and speed up RTO during restoration. Other data that is not as  important is protected, however on a different frequency with other retention  cycles, in other words, tiered data protection. By implementing tiered data  protection, best practices, and various technologies including data footprint reduction (DFR) such as archive, compression, dedupe in addition to  local disk to disk (D2D), disk to disk to cloud (D2D2C),  along with routine copies to offline media (removable HDDs or RHDDs) that go  offsite,  Im able to stretch my data  protection budget further. Not only is my data protection budget stretched further,  I have more options to speed up RTO and better detail for recovery and  enhanced RPOs.


If you are looking to avoid losing data, or loss of access, it is a  simple equation in no particular order:

  • Strategy and design
  • Best practices and processes
  • Various technologies
  • Quality products
  • Robust service delivery
  • Configuration and implementation
  • SLO and SLA management metrics
  • People skill set and knowledge
  • Usage guidelines or terms of service (ToS)


Unfortunately, clouds like other technologies or solutions get a bad reputation or blamed when something goes wrong. Sometimes it is the technology or service that fails, other times it is a combination of errors that resulted in loss of access or lost data. With clouds as has been the case with other  storage mediums and systems in the past, when something goes wrong and if it has been hyped, chances are it will become a target for blame or finger pointing vs. determining what went wrong so that it does not occur again.  For example cloud storage has been  hyped as easy to use, don’t worry, just put your data there, you can get out of  the business of managing storage as  the cloud will do that magically  for you behind the scenes.


The reality is that while cloud storage solutions can offload functions, someone is still responsible for making decisions on its usage and configuration that impact availability. What separates various providers is their  ability to design in best practices, isolate and contain faults quickly, have resiliency  integrated as part of a solution along with various SLAs aligned to what the service  level you are expecting in an easy to use manner.


Does that mean the more you pay the more reliable and resilient a  solution should be?
No, not necessarily, as there can still be risks including how the  solution is used.


Does that mean low cost or for free solutions have the most risk?
No, not necessarily as it comes down to how you use or design  around those options. In other words, while cloud storage services remove or  mask complexity, it still comes down to how you are going to use a given  service.


Shared responsibility for  cloud (and non cloud) storage data protection
Anything important enough that you cannot afford to lose, or have  quick access to should be protected in different locations and on various  mediums. In other words, balance your risk. Cloud storage service provider toned  to take responsibility to meet service expectations for a given SLA and SLOs  that you agree to pay for (unless free).


As the customer you have the responsibility of following best practices  supplied by the service provider including reading the ToS. Part of the  responsibility as a customer or consumer is to understand what are the ToS, SLA  and SLOs for a given level of service that you are using. As a customer or consumer,  this means doing your homework to be ready as a smart educated buyer or  consumer of cloud storage services.


If you are a vendor or value added reseller  (VAR), your opportunity is to help customers with the acquisition process to  make informed decision. For VARs and solution providers, this can mean up  selling customers to a higher level of service by making them aware of the risk  and reward benefits as opposed to focus on cost. After all, if a order taker at McDonalds can ask Would you like to super size your order, why cant you as a  vendor or solution provider also have a value oriented up sell message.


Additional related links to  read more and sources of information:

Choosing  the Right Local/Cloud Hybrid Backup for SMBs
E2E  Awareness and insight for IT environments
Poll: What  Do You Think of IT Clouds?
Convergence:  People, Processes, Policies and Products
What do  VARs and Clouds as well as MSPs have in common?
Industry  adoption vs. industry deployment, is there a difference?
Cloud conversations: Loss of data access vs. data loss
Clouds and Data Loss: Time for CDP (Commonsense Data Protection)?
Clouds are like Electricity: Dont be scared
Wit and wisdom for BC and DR
Criteria for choosing the right business continuity or disaster  recovery consultant
Local and Cloud Hybrid Backup for SMBs
Is cloud disaster recovery appropriate for SMBs?
Laptop data protection: A major headache with many cures
Disaster recovery in the cloud explained
Backup in the cloud: Large enterprises wary, others climbing on  board
Cloud and Virtual Data Storage Networking (CRC Press, 2011)
Enterprise Systems Backup and Recovery: A Corporate Insurance Policy


Poll: Who is responsible for cloud storage data  loss?

Click here to cast your vote on who is responsible for cloud storage loss and view results


Taking action, what you  should (or not) do
Dont be scared of clouds, however do your homework, be ready,  look before you leap and follow best practices. Look into the service level  agreements (SLAs) associated with a given cloud storage product or service. Follow  best practices about how you or someone else will protect what data is  put into the cloud.


For critical data or information, consider having a copy of that  data in the cloud as well as at or in another place, which could be in a  different cloud or local or offsite and offline. Keep in mind the theme for  critical information and data is not if, rather when so what can be done to  decrease the risk or impact of something happening, in other words, be  ready.


Data put into the cloud can be lost, or, loss of access to it can  occur for some amount of time just as happens with using non cloud storage  such as tape, disk or ssd. What impacts or minimizes your risk of using  traditional local or remote as well as cloud storage are the best practices,  how configured, protected, secured and managed. Another consideration is the  type and quality of the storage product or cloud service can have a big impact.  Sure, a quality product or service can fail; however, you can also design and  configure to decrease those impacts.


Wrap up
Bottom line, do not be scared of cloud storage, however be ready,  do your homework, review best practices, understand benefits and caveats, risk  and reward. For those who want to learn more about cloud storage (public,  private and hybrid) along with data protection, data management, data footprint  reduction among other related topics and best practices, I happen to know of some  good resources. Those resources in addition to the links provided above are titled  Cloud and Virtual Data Storage Networking (CRC Press) that you can learn more  about here as well as find at Amazon among other venues. Also, check out Enterprise  Systems Backup and Recovery: A Corporate Insurance Policy by Preston De Guise (aka  twitter @backupbear ) which is a great resource for protecting data.


Ok, nuff said for now


Cheers gs