Is RAID 5 really protecting your data?


RAID 5

Big Question… What RAID5 is for?

As part of our data recovery business, every now and then we receive quote request on data recovery from a RAID server. So what really happened? A drive failed, reconstruction failed and vendor phone support was disastrous. Can you recover our data?

The worst of it was that there was no backup. They believed that RAID 5 would protect their data and they were wrong.

RAID 5 does offer some data protection assuming it works. But it’s main purpose is to protect access to your data.

This is why it is popular in enterprise applications where maintaining data access during a failure is of vital concern. But these arrays are always backed up so that if there is a catastrophic array failure – a not uncommon occurrence – the data is still recoverable despite the interruption in service.

That’s how it played out with the small company. After the drive fail they still had access to their data. But when they replaced the drive the rebuild did not go as expected. They were stuck. If they had stopped there and made a backup they probably could’ve saved all their data. But they thought the RAID was there to protect their data.

Most enterprise RAID today do not use RAID5 because the likelihood of a second failure during the rebuild – increasingly lengthy because of growing drive size – means that the likelihood of a second failure during rebuild is too high for comfort.

Note that this does not mean a second drive has to fail: it can be as simple as an unrecoverable read error on a remaining drive that totally pooches the rebuild. Then you have to go to your backup – assuming you have a backup.

Talk to easySERVICE Disaster recovery team today and let the experts help you protecting your data. Disasters that threaten a business can happen anywhere at any time. But no matter how it is caused, a loss of data, or access to data for any kind of extended period, inevitably means a loss of revenue, a loss of productivity, a loss of reputation, and increased costs.

Put us to the test today!  Don’t be a victim of low prices and false promises. We guarantee our service standards.

  • Call us at 1 855 BY STELLAR (297 8355) .
  • You may also visit our web site directly to learn more about our capabilities

We are committed to building the value of the easySERVICE brand and we stand behind our service to you. We want to earn your trust and confidence as your “go-to source” when you have data retrieval challenges.

 

What should one trust hard drive or cloud storage?


Nothing lasts forever. Every single hard drive ever manufactured will die one day, and how comforting that is! It is important that you find local storage or cloud storage providers with whom you can entrust your data. But can we really trust cloud storage for our all personal information? What about constant risk of identity theft?

One should consider all Pros and Cons before choosing a physical storage or cloud service. Researchers of Stellar Phoenix Solutions have come-up with following study.

Some of the most popular advantages of hard drive over cloud are:

  • Unlimited storage: The minimum external hard driveis about 320GB and they go all the way up to 3TB with more options available. The cloud drive data storage is small enough to be used on laptops while having enterprise class features that enable it to be scaled out to the largest organizations.

    Hard disk dissection

    Hard disk dissection (Photo credit: Roberto F.)

  • Privacy: Cloud storage isn’t necessarily the safest place for your most important files because it goes through a third party. The only way to be 100% sure your files are hack proof is to make sure they’re not stored online.
  • Warranties: hard drives to usually come with 3-5 years the manufacturers of a full replacement. They won’t replace your data but being able to get a new hard drive is still a nice perk. One can always use a trusted data recovery provider to recover this lost data.
  • Portability: You can carry it around, they are small and handy. Network outages mean the cloud data storage is completely unavailable.
  • Security: External hard drives can be encrypted so that you can only access them with a password. Some are so savvy that they have finger print readers that only allow you into them.
  • Endless possibilities: Creating your own Cloud using an external hard drive has a lot of advantages over trusting a third party with your data. Plus you can always add more storage at very little cost.
  • Performance: Performance of cloud data storage is limited by bandwidth which is not a case with a hard drive.
  • Compatibility: Cloud data storage providers use proprietary networking protocols often not compatible with normal file serving on the LAN. The cloud data storage industry doesn’t have a common set of standard protocols. This means that different interfaces need to be created to access different cloud data storage providers. Swapping or choosing between providers is complicated as their protocols are incompatible.
  • Economical: A basic 1TB hard drive on Amazon is about $100 that breaks down to about $0.12 per gigabyte. Google Drive is offering 1TB of cloud storage for $49.99/mo. or $600 per year. This huge difference helps your budget and allows you to physically have your files.

Some of the most popular advantages of cloud over hard drive are:

  • Every spinning hard drive will fail. We don’t know when, it could be today, tomorrow, or in 10 years but they will all one day experience failure.
  • It’s easier to get files on any device with Dropbox, Google Drive etc and all you need is a web browser.
  • It’s cheap because it doesn’t require installation, doesn’t need replacing,
  • Has backup and recovery systems in place hence saves additional cost and planning,

    Cloud drawing

    Cloud drawing (Photo credit: wlef70)

  • Does not have any requirement of a physical presence and requires no personnel to monitor or maintain.
  • It requires no environmental conditions, and doesn’t require energy for power or cooling.
  • It easily replaces large electronic data storage devices like file servers, Storage Area Networks (SAN) and Network Attached Storage (NAS) etc

Source: Business insider

Is cloud solutions really more secure than in-house services? It can be economical but is it 100% SAFE?


Cloud computing has been marketed as the great solution for controlling technology costs, for the rapid deployment of solutions and a windbreak against uncontrolled system downtime. Those with experience in this space will be able to poke quite a few holes in those assumptions, when a cloud service provider, like Amazon, experiences an outage, it can be scary to those that use the service. Outages can lead to unsecured data, such as when Drop box had their recent password issue.

English: Diagram showing three main types of c...

English: Diagram showing three main types of cloud computing (public/external, hybrid, private/internal) (Photo credit: Wikipedia)

One common area that most of us would agree on is that there are greater security risks with cloud-based systems.

Following are a few points which are making Cloud storage so popular:

  • One way of potentially reducing your security risk is to engage the services of a Managed Security Service Provider (MSSP).  A MSSP can monitor, remediate and notify their customer of network and system vulnerabilities via a cloud service.  The client can gain a significant boost on security without hiring anyone internally.  This is an excellent way to free up internal staff to tackle proactive security tasks.
  • Second, a cloud solution for critical data storage provides a hedge against a catastrophic event.  This remotely stored data can then be restored at the reconstituted customer site as part of its Disaster Recovery plan.  One caveat to this strategy is data restoration from the cloud can be slow based on the amount of data and bandwidth available for the total restoration.  Companies should still have a tape or disk backup strategy for Disaster Recovery or Business Continuity.  However, having the cloud data recovery option available is a viable choice for enterprise customers who cannot afford significant data loss.
  • Third, the management of mobile devices via Software as a Service (SaaS) model in the cloud.  Many organizations are looking to pare back IT staff and adding another system to configure, implement, monitor and maintain for Mobile Device Management (MDM) may prove to be too costly.  Having the hardware/software in the cloud removes a significant internal resource cost as well as capital expenditures on hardware and software.

But is this all a commonly practiced industry standard by ALL CLOUD STORAGE providers? Ensuring that cloud solutions are more secure than in-house services can be difficult to define and measure.

Have any of us ever asked ourselves a simple question? How moving to a cloud computing provider can improve security? Or how moving a particular service or system to the cloud can actually improve your organization’s security posture?

What most users don’t understand is that when these cloud services are free then .. WHY FREE?… no one gives away free storage – not even Google.

English: Cloud Computing Image

English: Cloud Computing Image (Photo credit: Wikipedia)

What’s worse is that these cloud storage providers are so enticing!  And all these value propositions generally come to a squawking halt when someone realizes that the data you’re carelessly putting up “in the cloud” isn’t encrypted on its own.  Mostly because you just assumed everything is safe and secure you never invest in a proper encryption system.

This is where we all are WRONG. All those corporate documents you put up on that cloud storage provider can now be pulled down by an attacker with relative ease.  Moving beyond simple cloud storage we have cloud-based backup, cloud-based archiving (almost the same as backup), and now remote-access of local storage through the cloud and list goes on and on and on. How does that work with your security policy? Most important point is that if you can access the data from anywhere so can hackers.

Outages can also lead to loss of data, a major concern of all businesses. Amazon’s Elastic Compute Cloud had outage issues twice in 2011 and these outages caused some of their clients to lose precious data. So, the big question remains – can cloud companies truly guarantee the safety of data?

Cloud comes with a risk of lack of control over system and data access, concerns about data encryption, data ownership and classification of critical data. Security risks on the business side include loose Service Level Agreement (SLA) and inability to retrieve enterprise data from vendor effectively.

Also all the cloud service providers are also using hard drives for data backup just like all of us and the most commonly used SATA/PATA hard drive are extremely sensitive to static electricity and physical jarring or jolts.

While no one can say for 100% certain that data will not be lost because you have a cloud service. The cloud is useful – no one can argue that point – however, it has its weak points, one of which is data loss. If cloud service providers can face data loss, so can you.

If your data is critical, make sure you choose a data recovery service like Stellar Phoenix that can properly recover data from physically damaged drives. Even the simplest recovery attempts on a physically damaged drive could render your data unrecoverable. The first recovery attempt is always the best recovery attempt.

At Stellar Phoenix Solutions, our engineers use the safest methods available to ensure your data is not lost from repeated recovery attempts.  We have successfully recovered data from hundreds of thousands of drives with extreme physical and logical damage.

Put us to the test today! We guarantee our service standards.

  • Call us at 1 855 BY STELLAR (297 8355) or click here to complete a service request form.
  • You may also visit our web site directly to learn more about our capabilities

We are committed to building the value of the Stellar Phoenix brand and we stand behind our service to you. We want to earn your trust and confidence as your “go-to source” when you have data retrieval challenges.

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