Dell Technologies presents Dell PowerScale (replacing EMC Isilon) as a scale-out NAS solution and server technology that provides the flexibility of a software-defined architecture with accelerated hardware innovations to harness the value of data.
Isilon Systems was acquired by EMC in 2010; some EMC Isilon NAS appliances are still available and supported under the PowerScale brand.
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HPE SimpliVity
Score 7.1 out of 10
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HPE SimpliVity is a hyper-converged infrastructure solution. HPE acquired SimpliVity for its Omnicube line of products in January 2017.
EMC Isilon Scale-Out NAS is well suited for larger files (greater the 128 Kb) and where you need to have everything in one common name space. Where it is less appropriate is for many small files (millions of files less than 128 Kb in size) - this causes the protection level to becoming mirroring, which will cost more space.
I only know what I know...which is my IT world. Having two datacenters that were physical servers attached to a SAN that "attempted" to replicate and then migrating. For a SMB small IT shop that happens to have two datacenters already in place...this has been ideal. I can have a generalist maintain the system and we have a private cloud for DR with hardly any effort...the biggest gain by far!
Deduplication and Compression - SimpliVity keeps the space consumption to a minimum. We currently have 60 servers running virtually and we still have room to grow. This really helps with the backups as we can have longer retention.
Backups - Ability to keep backups for longer and to create multiple backup policies for a VM is a breeze. You can have a backup policy for each datastore as well as a separate backup policy for the same VM.
Creating Datastores is very easy. No more messing around with LUNS and iSCSI. Just go to the SimpliVity tab and select create datastore and it's done. You can also increase the datastore on the fly as well as have a datastore bigger than 2TB.
File level recovery is included as well. The whole backup process in SimpliVity can help you do away with other software.
Some upgrades require the entire cluster to be rebooted simultaneously. In this day and age, that should not be necessary. This is my biggest disappointment with Isilon to date.
When using multiple storage pools you have to be very careful with your capacity management. Filling up one pool can cause an overflow of data to a pool that is less performance driven. Do not underestimate your capacities or you will find yourself in a tight spot.
Block size is almost always an issue with Isilon. It does not handle all types of data well. In many cases PACS and VNA data is best to be stored on a different storage platform that will utilize the capacity more efficiently that Isilon is capable of.
Deduplication seems to be less efficient on Isilon than on other platforms for similar types of data.
It sits nicely ontop of VMWare and is easy enough to use. Some improvements to the UI could be done, such as placing buttons where it is expected to have them not in unusual places, so you have to hunt for them. The backup and restore is intuitive and makes things super easy if you need to do a quick rollback. Space savings on multiple VMs and backups means we are backing up more than we need which gives us confidence in what we do. Updating the system is also fairly easy and their support has always been fantastic. They will contact us if they detect any issues, usually before we notice them!
Support is very good. With proactive support, you are supported by an engineer in North America who answers the phone and immediately begins assisting with your issue. The folks I have dealt with in the last several years have been very skilled and it is rare to have a ticket open for more than a day or two. Issues affecting production are dealt with appropriately and are escalated within the support organization.
Raw disk space vs. logical disk space ratio was significantly better on the Isilon. Fast cache using SSD drives for faster searching is available on the Isilon but not available on the Overland solution. Isilon solution included faster backend switching between nodes.
HPE SimpliVity provided us with the ability to replace our existing infrastructure with a solution that provided better backup and recovery, and an off-site DR solution, at a lower price point than other solutions.
