Unity: VNX: Windows client returned "There is not enough space on c$" when copy data to NAS (Dell EMC Correctable)
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Symptoms
When Windows clients copy data to the CIFS shares on VNX or Unity, a pop up messages stated "There is not enough space on c$, You need an additional xx GB to copy these files."
Cause
The Windows clients access data via \\<cifs_server>\c$\<cifs_share>. Although there is enough space in <cifs_share>, the Windows clients always compare the size of the data to copy with the free space of c$, and then return error.
By default the total space of c$ is about 1.5 GB on Unity, and 250 MB on VNX.
By default the total space of c$ is about 1.5 GB on Unity, and 250 MB on VNX.
Resolution
Access CIFS via \\<cifs_server>\<cifs_share> instead, because c$ is designed for management only.
Affected Products
Dell EMC Unity FamilyProducts
Dell EMC Unity Family, VNX/VNXeArticle Properties
Article Number: 000057230
Article Type: Solution
Last Modified: 25 Apr 2025
Version: 3
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