I have a support case open on this, but with the holidays I expect that dialogue will be on hold until next week sometime. In the meantime, can anyone offer some insight on my situation?
Here is the problem report that I filed with Drobo tech support on 14-Dec:
[i]1) Since reformatting my Drobo to 16TB (with 5TB actual storage) and loading it with 2.5TB of data, it has been very slow to mount and dismount. Both mounting and dismounting now consistently take between 30 and 60 minutes. Is this normal? If not, how can I correct this?
- Also, when I look at the storage graph in Drobo, under “How is my storage being used?”, the graph constantly flips back and forth between two different states, every 10 seconds or so. In one graph, Available for Data / Reserved for Expansion / Used for Protection / Overhead is 3.15TB / 931.50GB / 497.84 GB / 3.26 GB and in the other, the labels and bars instead are 3.15 TB / 0 B / 1.39 TB / 5.70 GB. Why is this happening? Does it indicate a problem?[/i]
My OS is Windows 7. The Drobo technician asked me to perform a CHKDSK /R. After running 24 hours a day for 10 days, CHKDSK at last completed the last scanning stage yesterday. For the past 24+ hours, the CHKDSK status message has read:
CHKDSK is verifying free space (stage 5 of 5)…
3613218988 free clusters processed.
Free space verification is complete.
Adding -681748308 bad clusters to the Bad Clusters File.
So, at this point, my questions are:
Has CHKDSK hung, or is it still doing something active and useful? The CHKDSK process is still consuming 25% of CPU resources.
Also, is it normal for a such a large negative number of clusters be added to the Bad Clusters File, and if so, what does this indicate?
Any thoughts on cause and correction of the underlying problem will also be appreciated.
I am hoping to soon conclude the therapy and welcome back a healthy Drobo. It is inconvenient having to workaround my primary archive and primary backup storage being offline for so long.
David A. Gilmour LPPO