I have been a lightroom user since 1.0. Over the last 7 years I generate four new catalogs per year. My primary storage device is a 16 TB Lacie 4Big Quadra RAID in RAID 5 configuration (parity). My Lacie has slowly filled up to absolutely full. I could never figure out why, even after I delete 40 or 50 GB at a time, in a few weeks, it's fill up again, even without me loading anything to the drive. I am yet again down to 9 GB free (out of 10.9 usable TB).
I checked the properties for the lightroom catalogs directory and found something really weird. It says the size is 150 GB. But size on disk is 1.44 TB - roughly 10x larger.
Now, as a RAID, it usually shows one third larger (due to parity storage). But 10x????
What is going on here? I can't seem to isolate where these files are, if they are hidden files, cache, previews, etc.
I use another disk as scratch disk.
Thanks in advance
DId you empty your bin? Deleting files put them into the bin and they still take up space.
RAID files use the same storage as files on a standard disk (from the OS view). The organisation of the RAID is hidden from the file system. Your available storage should be on a 3 disk RAID 2 thirds of the physical space.
Lightroom does not use scratch disk as of my knowledge. Photoshop however does, but that should be cleaned up after exit (Except for irregular exits).
I would suspect a problem with your RAID disk. There is always a difference between actual size on disk and the real size of the files because of the block size used by the formatting you used on the disk but that is generally fairly small definitely not a factor of 10.