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Does QNX4 FS support SSD drives?

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Applicable Environment

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Topic: Does QNX4 FS support SSD drives?
SDP: 6.5.0
Target: Any supported target

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Recommendation

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In part, SSD drives require a trim command sent from the filesystem to the drive to clean up old used blocks that are no longer in use. QNX 4's filesystem and block drivers do not support this command. Failing to issue this command will result in the filesystem eventually filling up with stale blocks. The firmware on the drive will eventually issue its own command to find and cleanup stale blocks, however this command can be very slow. The result will potentially be extremely slow filesystem performance.

QNX 6 does support SSD's properly.

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NOTE: This entry has been validated against the SDP version listed above. Use caution when considering this advice for any other SDP version. For supported releases, please reach out to QNX Technical Support if you have any questions/concerns.

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