MegaRAID CacheCade SSD Cache

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With CacheCade, LSI is offering a quick SSD read/write cache for RAID volumes. The functional approach is similar to Adaptec's maxCache technology. Detailed information about the configuration of a CacheCade volume can be found once more in the Configuring the LSI MegaRAID CacheCade.

Functional Approach

Functional approach to CacheCade (source: [1]
  • One or more SSDs will be connected to the RAID controller in addition to the normal hard disks, when using CacheCade.
  • Thereby, the conventional hard disks operate completely normally in the RAID array (such as, four hard disks in a RAID 5 array).
  • Data that is often read from the RAID array is automatically stored on the SSDs ("working data set").
  • Data areas that are often read can therefore be read directly from the SSD, which improves read performance.
  • The CacheCade content will remain on the SSDs even during a re-boot.

Versions

CacheCade 1.1

Initial version of CacheCade

CacheCade Pro 2.0

This is the current version of CacheCade. It also uses the SSDs for writing operations and offers improved read cache performance[1][2]

RAID Controllers and CacheCade

References

  1. 1.0 1.1 LSI CacheCade Product Brief (for CacheCade 1.1)
  2. CacheCade Pro 2.0 FAQ

Additional Information

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