Joe, Thank you for your response. After playing around for a while, I was able to get the Distribution of Volume Across Members back to the R50 array after I: 1) Decreased the number of total snapshots saved -- From four to three snapshots 2) Deleted all of the existing snapshots and created a new snapshot backup 3) Decreased the Snapshot Reserve percentage After doing all of those things, the storage pool pie chart says: Reserved for Volumes 4.85 TB (54.6%); Reserved for Snapshots 1.58 TB (17.7%); Free Space 2.46 TB (27.6%). The free space on each array is now: R10 2.04 TB; R50 2.12 TB. So now, it's been resolved.   Is it safe to say that in this case, the volume was "over-subscribed" due to the snapshots using too much space?
Hi, I was wondering why my volume is "over-subscribed" when I have enough space on the pool?  Here are some background information of my configuration: PS6000E - 7.2k SATA drives - 8 TB base - 16 x 500 GB - RAID 50 - 5.23 TB after RAID 50 - Name: R50 PS6000XV - 15k SAS drives - 9.6 TB base - 16 x 600 GB - RAID 10 - 3.66 TB after RAID 10 - Name: R10 On the R10 array, I have 1.43 TB of free space and on the R50 array, I have 2.1 TB of free space. On the Pool Capacity pie chart, it says 4.85 TB (54.6%) for Volumes, 3.46 TB (38.9%) for Snapshots, 587.9 GB (6.5%) for Free Space. All of the volumes are Thin Provisioned.  So on one 400 GB volume, In-Use volume space is 136.26 GB, Free 63.33 GB, and Unreserved 200 GB.  Snapshots In-Use is 6.99 GB and Free 93.02 GB. Distribution of Volume Across Members: R10: 313.83 GB; R50: 85.8 GB Volume Distribution Info says: RAID Preference: RAID 50; Status: over-subscribed; Load Balancing: Enabled. Does anyone know why it's considered to be over-subscribed and how to fix this?  Why is the R10 basically taking over this volume when it has a RAID preference of RAID 50?  Also, can someone please direct me to some literature or links so I can educate myself about this?  Thank you in advanced!
Volume Over-Subscribed Question