Seminiva,

The first thing I would check is the size of the second SD you added. Size can be difficult to estimate with SD cards; just because two cards are the same size (32GB) does not mean they contain the same number of available blocks. During a mirror rebuild, the size of the secondary card must have an equal or greater number of bytes available than the primary card. The easiest way to validate this is to select the card from within an OS, and request the size of the disk. I say this as the SD shows offline and not failed, meaning it is still seen as available. 

What do the 2 SD's show for individual sizes?

The size is the same, by the properties of the sections, I tried to pull out the shawl, format the second SD card. The cards themselves are 32 GB in size. Today I'll try to experiment again.

Did you ever resolve this?

My Dell T320; exactly the same.

Same issue here on a R720. Was there a solution?

This has been the process i use when one or both cards have issues.

Clear the SEL (system event log).

If just one card has an issue, remove it, insert it into a Windows box. Open a command prompt (run as administrator).

Note: the next commands will delete all data from the SD card!!

Diskpart, list disk, sel disk x (where x is the number of the SD card. Be careful to choose the SD card!!

Clean, then exit. Eject the card physically, reinsert it into Windows box, allow windows to format it. If format fails, the card is probably bad. Put card back into server, watch for message at boot that asks if you want to mirror the contents of the 1st SD card onto this one, say Yes.

Same problem on an R720 here. Did someone ever find a solution?

Hello,

Please delete the SEL log. If iDRAC FW is not up to date, update to the latest version here https://dell.to/3ellwcz
Make sure your SD cards are the same and have enough free space. If necessary, format your SD card as in the above message when you have backups.

Thank You! 

I'm on 2.63.60.62, and I can't see anything IDSDM related in the changelong of the newest one, so I guess it wouldn't make a difference if I updated it. And to be fair the one I have is already pretty new, so.. If it was related it would've been already solved by this build.

These are two brand new 64GB Kingston Cavas React micro SDs, and I was wondering if they were too big for this old IDSDM (mine is 12g server, a 720), and if I should buy 16 gigabyte ones instead.

If I disable mirroring, and use only the one in SD1 slot, then it works great, it's just that if I enable mirroring and after the mirroring completes it reports SD2 to be offline.

IDSDM probably doesn't support these SD cards. If you can try with lower capacity cards, can you try it? I did a lot of research, but I couldn't see what capacities IDSDM supports for 12G servers. https://dell.to/2WaCAfe I think FW doesn't offer a capacity solution for SD cards. In the IDSDM FW update for 14G, there was an improvement like "Updated to support larger SD card capacities, up to 1024 GB". Unfortunately for 12G, I couldn't see anything similar in the firmware enhancements and fixes I reviewed. It is possible that if SD cards DELL was not originally produced, it may be incompatible. But you probably have trouble with 64GB card because there is no FW level solution

Let us know if it helps.

And just to be sure, each 64G card works fine on its own? 

Rey
#Iwork4Dell