Dell PowerScale vs. PowerProtect DD Series

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.

Incentivized

We have huge data coming in from different sources and also from multiple organizations in our Data centres. This data had multiple copies of the same data and was huge in size therefore, we wanted to have a solution in place which can help us with a good amount of deduplication at the deepest possible level to make sure that our ecosystem does not have multiple copies of the same data and is also efficient at the same time. Having said this, we wanted this solution to be secure and reliable since it had to be exposed to a huge critical set of data in the market. To add, backup and restoration was something that we were also keen on evaluating so that once we have efficient data within our system, the time it takes to backup and restoration also reduces. And all this was justified by this solution when we signed up with them. From the pricing perspective and the implementation side, the solution needs improvement to make it more efficient and user-friendly.

Incentivized

• NAS Storage
• Capacity and Performance details of the array
• Alert and Operations details

Incentivized

• It writes backups quickly. DDBoost add-on is very useful as well for improving backup speeds.
• DD is very efficient in its use of capacity. It dedupes and compresses very well.
• It spans to large capacity amounts.

Incentivized

• 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.

Incentivized

• It can be expensive to implement, especially when used in conjunction with other applications/hardware such as Avamar.
• The TCO can be high, especially when it needs its storage expanded.
• Recovery speeds can be slow (compared to other solutions) for when recovery is time sensitive.

Incentivized

DD has performed flawlessly for almost 10 years as our backup/recovery storage with offsite replication. Given its track record and great support from EMC, we're unlikely to look elsewhere any time soon.

Incentivized

Customer support has had some ups and downs here. We've had several issues with EMC support before and during the acquisition by Dell, but in the last 18 months support has been top notch. Quick and knowledgeable help is but a chat away, or they will call you back so you don't have to wait on hold. The team supporting us is responsive and is quick to assist with any request or issue.

Incentivized

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.

Incentivized

We selected Data Domain due to its integration with our backup software. The Data Domain works well for what we need it to do.

Incentivized

• Isilon provides very high value for money
• Matches the performance and storage requirements of the arrays
• EMC provides very skillful and high response team in case of any issues in isilon

Incentivized

• We were able to immediately discontinue our remote tape storage and TBU maintenance.
• Reduced backup footprint in the data center.
• It is costly to expand so buy it with a purpose.

Incentivized