Windows 10: Windows storage spaces data missing for no reason

I've been using my Windows storage space for a year or so with no problems at all, but recently I've noticed folders and files are disappearing. Currently running build 19042.985 Checked all of the storage space info, all 4 drives are still are still marked as OK, and it shows the correct pool size and used space. However, when I right click on the properties of the storage space in Windows Explorer, it only says that 2.76 TB are used, when 4.30 TB are used. Additionally, I am unable to see around 600gb of files that I've been looking for, and there is no sign of physical issues with the drives. I've used both chkdsk /f and SFC which return no errors, so I'm becoming very confused. Hoping to find some answers, most of the data is safe already but I'm wanting to try to rebuild what I have here. Thanks!

:)

 

Any way to downgrade ver. of MS Storage spaces volume w/o data loss?

1. Install Windows 1607 & 1709 dual boot system
2. Connect two free disks
3. Boot into 1607
4. Create storage pool, assign two free disks, create two-way mirror volume
5. Copy data to new volume
6. Reboot into 1709
7. Upgrade your Storage Space pool to gain new features as MS suggests
8. Reboot into 1607
9. Your Storage Space configuration looks now as in the picture, volume is inaccessible
10. Notice that doing step 7 was not the smartest idea, data are now accessible only from Windows 1709.

Question: Is it possible to simply revert Storage Spaces metadata back to version 1607? Answer: No. It is necessary to backup data, destroy upgraded pool, create new pool & mirror in Windows 1607, and restore data.

Is it so hard to understand what necros asks for?

 

Windows 10 Storage Spaces

Question;

Have a RAID 0 storage pool in Windows 10. The storage pool has 952 GB of usable space, it currently has 6.06 GB of space used. I ran a system clean-up which wrote data to securely erase empty hard drive space. Now I get a warning that my storage pool is
full. I wrote a large group of files approximately 41 GB to the space to verify there wasn't an actual limitation. After all the files copied without issue I deleted them and noticed that the pool went from no capacity to 911 GB in use, the amount that was
written and then deleted.

I have searched but not come across this issue in any internet searches. Perhaps I am not searching for the correct terminology?

Any suggestions for correcting the storage spaces error without affecting the data on the pool? The reason of concern is that the drive has a SoildWorks vault space and I would prefer not to delete it and have to recreate it.

Thanks in advance for any suggestions.

 

Windows 10 Storage Spaces Improvements?

Are you using 3 column parity? This is the default setting for parity spaces in the Windows 8.1 GUI. If so, this is the reason for your high overhead. 3 column single-parity incurrs a 50% storage overhead (1 parity shard for every 2 data shards)

This makes sense for small pools containing 3 or 4 physical disks. However it is a poor choice with 14 physical disks.

In your case I suggest a 12 column dual-parity space. This means 2 parity shards for every 10 data shards. This will allow for recovery from two drive failures and give only a 20% storage overhead.

Unfortunately the Windows 8.1 GUI is too basic to allow creation of such a space. You need to use Powershell. You can create such a space on your existing storage pool and move data to it from your existing parity space. As you move the data your free space
will increase.