Ah,
So you are not saying that you can’t access the disk via HTTP as in
http://server/Disk-2/ but rather the disk status page is missing disk status for the drive in question.
If that is correct, then what you are observing is normal. The status generation code has very low priority and is designed to yield to any and all other processes. In addition, if a device takes too long to respond, some critical blocks of the status generation code are designed to exit on timeout. A common problem with some disks is a slow-to-respond SMART check. So, on occasion the storage status page may be incomplete. The process will likely complete on the next status cycle. If a disk is consistently slow to respond, then it may be necessary that SMART be disabled for that disk only.
Regardless, this has no effect on the performance of the system and is behavior by design.
Hope that helps.
