Thursday, June 11, 2015

Today we continue to read the Riverbed optimization systems.  RiOS supports standby between primary and backup devices. Even Active/Active configuration is supported where each appliance is serving as a primary for some traffic and as a backup for some other appliance, with full data store synchronization. In addition, RiOS permits a variety of in-path, virtual in-path or out of path configurations both parallel and clustered.
Next we look at end to end security. Security and performance are often at loggerheads for WAN traffic optimizations. Either accepting sub-par performance or lowering the security bar is needed. Data has to be secured both in-motion and at rest. Here RiOS's SSL acceleration module allows customers to securely accelerate SSL encrypted traffic without scattering certifications and keys. It works along SSL offload or load balancing devices.Server IP auto discovery simplifies this set of features. RiOS also support optional encryption of inner channel traffic.
To protect data at-rest, RiOS encrypts its datastore with AES which also satisfies security or compliance regulations. Since the data in the data store constitutes of segments and proprietary references, it is difficult to put together a file from the shredded data by a hacker. The optional encryption of the data store provides an additional level of security and compliance over and on top of already secure datastore.
Since SSL connections are certificate based, RiOS devices have strong authentication securing the ends of the encryption traffic. Moreover, management functions for security are streamlined through the console and controller as we discussed in the previous posts.
The design of the WAN Optimization techniques for RiOS stems from the three issues that plague WAN traffic :

  • WAN bandwidth limitations
  • transport protocol inefficiencies
  • and application protocol chattiness

As a summary,
RIOS provides the following optimizations
Data Streamlining:

  • Memory only basic compression
  • Disk-based data reduction
  • QoS marking
  • QoS enforcement
  • Hierarchical QoS 

Transport Streamlining:

  • Basic TCP optimization
  • Advanced TCP optimization
  • HS-TCP/MX-TCP
  • 3 WAN visibility modes

Application Level optimizations

  • CIFS protocol
  • NFS protocol
  • Local file storage
  • MAPI
  • HTTP
  • HTTP Enhancements
  • MS-SQL
  • SSL traffic optimizations
  • Oracle 11i
  • Disaster Recovery Acceleration





























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