Dell Fluid File System Version 6.0 Support Matrix

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Space Pre-Allocation

The following tables provide an estimation of the pre-allocated (reserved) space for various file-system functions. These calculations can help you estimate disk space requirements and space growth of FluidFS systems.

Table 1. Reserved Space by Function
Allocation per	Reserved space
Cluster	10.4 GB
Appliance	345.5 GB
LUN	4 GB
Data Reduction	0.012% of total space, minimum 16 GB, maximum 256 GB
Total space	0.5%

The amount of reserved space can also be estimated using the following table.

Table 2. Reserved Space by Pool Size
NAS Pool Size	Percentage of Reserved Space
10 TB – 20 TB	2.5% – 4.5%
20 TB – 128 TB	1% – 2.5%
> 128 TB	< 1 %