• Append data or add a folder• Read Extended Attributes (EAs)• Write EAs• Execute file or traverse folders• Delete child or delete folders• Delete a fileThe Owner user type has two default permissions:• Write discretionary ACL• Read controlRapid Data Storage (RDS): DR Series SystemRapid Data Storage (RDS) is developed by Dell and provides a logical disk interface for use with network storagedevices. RDS allows for better coordination and integration between DR Series system backup, restore, and optimizedduplication operations with Dell NetVault Backup (NVBU).The DR Series system and NVBU integration is done using the Rapid OFS (ROFS) plugin developed by Dell. The ROFSplugin allows NVBU control over backup image creation, deletion, and duplication. RDS allows deduplication andcompression operations to happen on the client-side so that network traffic can be reduced.The RDS protocol allows the supported backup applications to communicate directly with the DR Series system anddetermine whether a specific chunk of data already exists on the system. If the data already exists, only the pointersneed to be updated on the DR Series system, and the duplicate chunk of data does not need to be transferred to thesystem. This process provides two benefits: it improves the overall backup speed, and also reduces the network load.Rapid OFS (ROFS) APINOTE: Rapid OFS (ROFS) is an internal API used by RDS. The term ROFS is not used in the web user interface orCLI.The Rapid OFS (ROFS) API is an application programming interface that allows disk-based devices like the DR Seriessystem to natively integrate with the Dell NetVault Backup. For example, because the DR Series system supports bothdata deduplication and replication, the ROFS API allows these supported DMAs to use the DR Series system appliancefeatures and duplicate the optimized data from one storage appliance to another.Unlike replication configured directly on the DR Series system for CIFS and NFS, the ROFS API allows the DataManagement Application (DMA) to be aware of the replication copy. The ROFS API allows the DMA to restore directlyfrom any DR Series system that can communicate with the DMA.The ROFS API enables the writing of data to disk and allows NVBU (the DMA) to interact with the DR Series system (thedata backup and deduplication device) using the ROFS API.OpenStorage Technology (OST): DR Series SystemOpenStorage Technology (OST) is developed by Symantec and provides a logical disk interface for use with networkstorage devices. The DR Series system appliance can use OST via plug-in software to integrate its data storageoperations with a number of data management applications (DMAs). Within Dell, OST is part of DR Rapid Data Access.OST allows for better coordination and tighter integration between DR Series system backup, restore, and optimizedduplication operations and the following supported DMA types:• Symantec NetBackup25
