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Just how Paranoid are you about your data?

Thursday, September 15th, 2016

When we deal with storage we do it on levels or paranoia

So how paranoid are you ?

Let’s start with the basics……..

We know that hard drives fail and therefore we use RAID to protect against that, but what else can I do to satisfy my varying levels of Paranoia

So protecting the drive is sorted but what if the shelf my disks reside in fails….what then, Well with Data ONTAP you have the option of using SyncMirror which will give Shelf level protection by replicating drives on one shelf to another shelf, so yes it requires double the storage but it will allow continuous access even if you have a shelf failure.

Ok so we have the drives covered, what about the controller (I want to eliminate any single point of failure). So our levels of Paranoia have risen another level. Don’t panic NetApp’s Primary offering is the ClusterMode solution. This allows multiple controllers to work together as a very robust, resilient beast that is designed to facilitate any failure and continue to run. Each node (controller) has a partner and they work together to accomplish the same goal and that High Availability pair with other pairs to give a solution that just keeps going.

That’s all well and good but what if my data centre has a significant failure that takes out my entire cluster..? well I see your level of paranoia has risen another level, but again have no fear you can replicate from one site to another asynchronously using SnapMirror and thereby giving you the option of a complete Disaster Recovery solution where in the event of a failure you can bring your remote site up relatively quickly with minimal data loss.

Well that sounds great but….(here we go, another level of paranoia) I need near zero down time and although disaster recovery is great my business needs full business continuance. NetApp have a solution for that using MetroCluster. MetroCluster is designed for just that, to keep you up and running no matter what and with full Synchronous replication up to 200km I think we have you covered. However, should you need more then you can combine MetroCluster with SnapMirror to extend your solution.

MetroCluster can:

  • Protect against hardware, network or site failure via transparent switchover.
  • Eliminate planned and unplanned downtime and change management.
  • Upgrade hardware and software without disrupting operations.
  • Deploy without complex scripting, application or OS dependencies.
  • Achieve continuous availability for VMware, Microsoft, Oracle, SAP and more.

MetroCluster software:

  • Protects against the major causes of downtime: power, cooling and network faults, as well as disasters affecting your site.
  • Combines array-based clustering with synchronous mirroring to deliver continuous availability and zero data loss.
  • Provides transparent recovery from failures.
  • Reduces administrative overhead and the risk of human error.
  • Needs only a single command for switchover.

So how Paranoid are you about your data………..it doesn’t matter, NetApp has a solution to satisfy every level of paranoia.

Courses you might be interested in after reading this article:

For more courses please visit: www.flane.co.uk/netapp

peter-green
Pete Green
Fast Lane Lead NetApp Expert

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How much capacity do you need?

Wednesday, September 14th, 2016

Over the years storage has continued to evolve as our thirst for saving data has grown.

So from a Drive approach that have been many changes. From the old traditional PATA drives to the faster but small capacity SCSI drives to then having the introduction of the very fast FCAL drives, but again they had limited capacity. The drive manufactures have continued to work with disks and squeeze more space by reducing tolerance and improving the mechanics. Even with that our need for storage space is just growing at an alarming rate. With all that in mind we have seen just over the last 12 months a 10 fold increase in capacities from 400GB to 4TB. Then to add to the equation we have the ongoing development of SSD drives. These run with less power and no moving parts, and what makes them even more astounding is that being Solid State are significantly faster. Spinning drives can potentially give you up to several hundred I/O’s, whereas SSD can give you thousands of I/O’s. NetApp systems are available with 15TB SSDs that are 50% larger than the biggest hard disk drives, with effective capacities that further increase the advantages of flash storage systems over disk. With 32TB SSD drives expected to arrive in 2017, and with flash component suppliers working to drive the price for SSDs lower, it’s only a matter of time until the all-flash data centre becomes a reality.dsc_0117-1

peter-green

Pete Green
Fast Lane Lead NetApp Expert

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