Big Parity® from StreamScale leads the industry in RAID reliability and processing speed, eliminating data loss and corruption due to disk failure, service errors, silent data corruption, and unrecoverable read errors. 30X faster than competitive RAID systems, Big Parity is the only product that provides advanced Verified Erasure Coding® which enable up to 127 parity drives to keep data safe and accurate during long data analysis cycles or rebuilds.

Big Parity Example

25x performance – 5 orders of magnitude more reliable

Most of the best protected storage systems today have two parity drives and can protect against typical data loss scenarios – one drive fails drive and a sector error occurs while rebuilding. For valuable data this is not good enough. Rebuilds during drive failure can take over two weeks when run in background mode. In a 100 drive storage system over 700 errors are likely to occur. If another drives fails during that two weeks, when an error occurs data will be lost. To properly protect Big Data, mission critical data, and data stored in a cloud here is a more realistic protection scheme:

  • 2 Parity Drives for Data Integrity - Used to eliminate Silent Data Corruption, especially during reconstruction
  • 1 Parity Drive for Unrecoverable Read Errors - Likely to occur in large systems with large drives
  • 1 Parity Drive for Performance - Large systems will likely have drives with high latencies at some point
  • 3 Parity Drives to reduce Reconstruction Events - Fewer service events required
  • 7 Parity Drives in Total - Guaranteed data integrity, predictable performance and economical service

More parity drives decrease service requirements even further. One additional parity drive reduces services events by one half, the next, by one half again. Which costs more, one additional disk drive or twice as many additional service events?

Go to our Forum discussion and tell us your data corruption story or Contact StreamScale now to see how to add Big Parity to your Storage system.


RAID Reliability Requires More Check Drives from Big Parity