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7/18/2017: Michael: no need to worry about any firmware on motherboards or RAID controller.
7/18/2017: Lulu: There are about 6 security updates via yum on head node. There are about four security updates on capsule but failed and aborted on updating. We got the version before yum update from Ezbackup and stored in /data/chroot/centos6-6-restore. We will see if we need revert it back to the version before update. Checked all hard drives are fine. Forced fsck,