Server Fault is a question and answer site for system and network administrators. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

LSI, Intel and Dell RAID controllers (perhaps others) have a "Patrol Read" feature to try to spot when a drive is failing before it completely fails.

LSI seems to disable patrol read on SSD by default but allows you to turn it on if desired via MegaCLi's SupportSSDPatrolRead option.

Is there any reason why I should NOT turn on patrol read for SSD? Will it cause premature failures? Or is it pointless for SSD?

I am suspicious because of the default disable. But I cannot find documentation anywhere that states why or why not.

share|improve this question

I'd leave it off. It may not be necessary, as quality/enterprise SSDs perform their own wear-leveling and reallocation of bad sectors. The RAID controller's "Patrol Read" is really geared towards the failure modes of mechanical drives.

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.