5.13.4
Active Spare
This Storage Mode automatically uses the last Flashcard in the unit as a spare. This provides
another level of redundancy in the event that a Flashcard fails. This mode is useful in an
environment where some of the RamSan-810’s storage capacity can be sacrificed for this
additional data redundancy. With Active Spare, if a card experiences a recoverable failure (i.e., a
flash chip fails), the data is migrated off of the failed card and onto a designated spare. Then,
later in a maintenance window, the failed card is replaced and the newly installed card becomes
the new Active Spare. Please note that the Flashcards are not hot-swappable.
In this storage mode there are still a few components that are not protected by Active Spare, so
there is a risk of an unrecoverable component failure. If a deployment requires no single point of
failure, mirrored RamSan-810s using the Max Capacity storage mode is the recommended
solution.
Notice:
This feature requires a license to be installed on the system.
Warning:
The failed card should be replaced immediately after the data replication is complete.
RamSan-810 User’s Manual
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Texas Memory Systems, Inc.