"This solution has a feature called Domain Boost, which allows for source deduplication and compression."
"Dell PowerProtect DD is a stable solution."
"I find the data to be most valuable."
"The most important feature is the level of data compression provided by Dell EMC. It's a leader in data compression and deduplication, and the level of compression isn't available with any other vendors in the market."
"The hardware can operate in high temperatures, in case of any disaster."
"It is very fast as compared to the other competitors. Its simplicity and bit rate are also valuable. It takes less time if we compare it with the old solution that we have."
"The most valuable feature is the performance because you can back up data really quickly."
"Stable and scalable suite of solutions with deduplication, apart from data protection, storage, and backup."
"I have found all the features useful in NetApp FAS Series."
"The input and output per second performance are satisfactory."
"The replication feature is noteworthy because it's faster than most and it uses little bandwidth. Then there's the friendly interface that the equipment offers. With this interface, it is very easy to manage."
"I like it. When it is up and running, it does the job."
"The most important features are SnapVault, Snapshots, and SnapMirror."
"The solution is stable."
"The solution is easy to use."
"Reliable storage solution with an easy setup. It has high availability and makes single file restoration easy. It also has good stability and scalability."
"I would like to see integration with public cloud."
"The price of the product is high."
"The only problem is that it's more expensive than any other vendors available in the market."
"The usage of this solution is a bit difficult to develop processes, and it takes a long time to market permits."
"It can probably have integration with other OEMs. It should also have more features for ransomware protection."
"Its management can be improved."
"They need to make migration easier."
"They still have hardware different from the software."
"I would like to see NetApp add incident support."
"The NetApp FAS Series is not as high-performing and is not as fast. Its speed needs improvement, but this could only be done if it's an all-flash solution."
"The solution can improve on the replication features."
"The one aspect of the solution that's negative for us is also more unique to us due to the fact that we did a MetroCluster. The tiebreaker piece that does the monitoring of the two different locations, and determines if one is not talking to the network normally (or if it's truly down) is a little difficult. It feels like it was not designed from the beginning to fit well into the other pieces. It feels like it was thrown in at the last minute and it is not smooth."
"I think this kind of infrastructure is mostly obsolete. To keep up with developments in this space, you need to move all these features to an All-Flash solution."
"Its operating system is very cumbersome. However, after you set it up, it runs pretty smoothly. Its file system is not very dynamic. It is very static."
"The user interface could be improved."
"There is no NetApp infrastructure set up here in Greece."
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Dell PowerProtect DD (Data Domain) is ranked 1st in Deduplication Software with 22 reviews while NetApp FAS Series is ranked 3rd in Deduplication Software with 20 reviews. Dell PowerProtect DD (Data Domain) is rated 8.8, while NetApp FAS Series is rated 8.4. The top reviewer of Dell PowerProtect DD (Data Domain) writes "Stable and easy to scale suite of deduplication, backup, data protection, and storage solutions". On the other hand, the top reviewer of NetApp FAS Series writes "Reliable, scalable, and stable storage solution which offers multiple features". Dell PowerProtect DD (Data Domain) is most compared with HPE StoreOnce, Veeam Backup & Replication, Rubrik, Dell Avamar and Dell NetWorker, whereas NetApp FAS Series is most compared with Dell PowerScale (Isilon), IBM FlashSystem, Qumulo, HPE StorageWorks MSA and Hitachi NAS. See our Dell PowerProtect DD (Data Domain) vs. NetApp FAS Series report.
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@Dhruba Roy, your question conflates very different kinds of storage.
PowerProtect DD is Dell's latest version of Data Domain. It is ONLY useful as target storage for backups. Nothing else, not even archiving. If that is what you want, it does what it's supposed to do. Albeit, it's a bit pricey and underperforming.
There are much faster, cheaper, and more advanced backup target storage. Especially when measuring restore performance. I would suggest you take a hard look at a variety of backup target storage vendors including, Infinidat InfiniGuard, ExaGrid, Quantum, StorONE, iXsystems, and many more. Most backup target storage is all HDD although some are hybrid SSD and HDD.
NetApp FAS is a general-purpose storage system for blocks and files. It can be all HDD, hybrid HDD and SSD, or all SSD (all-flash FAS or AFF). It's a solid all around storage system with NetApp pioneered capabilities, but expensive as a backup storage target.
Pure Storage FlashArray//X or //C are block all-flash storage arrays. Their FlashBlades are all flash file and object storage systems. Good performers but overkill and way too expensive for backup target storage.
I think you need to define what it is you really need. Of the 3 vendors you asked about, I am going to repeat myself, PowerProtect DD is ONLY useful as a target storage for backups. The other two can do so, but are really not priced nor designed specifically for backup target storage.
If general purpose storage is what you need NetApp and PureStorage are good possibilities among many others.
I think they are different types of storage for different purposes.
If you are looking for a storage where to put backups data you can think Data Domain is the perfect choice because it is its main use (most or all the backup softwares have plugins in ordere to manage data domains).
If you are looking for a primary storage (where to put your servers' data) then you can look to Netapp FAS and Purestorage.
The latter are flash natives so it's simpler to manage and configure. If you look at the Netapp FAS you can also choose storages with HDDs with less performance (and a cheaper price).