NetApp

Changing the cache block size
You may be able to optimize performance for your workload by changing the block size of the cache on a virtual machine.
Before you begin 
The default block size of 4,096 bytes has been selected as optimal for most workloads. Check with your NetApp representative to determine whether your configuration would benefit by changing the cache block size.
About this task 
This functionality is not available in FMC. Use the Format-FACache Flash Accel PowerShell cmdlet to change the cache block size.
Information in the cache is erased for all disks on the virtual machine when you change the cache block size. The cache will take some time to be rewarmed after the block size is changed.
Steps 
1.
2.
At a Windows command prompt in the VM, enter:
powershell
3.
Import-Module FA-PsCmdlets
4.
Set-FACache -CacheAdminState Disabled
5.
Format-FACache -BlockSize <size> -BlocksPerChunk <number>
Note: Blocksize is measured in bytes. BlockSize × BlocksPerChunk must be less than or equal to 1 MB.
6.
Set-FACache -CacheAdminState Enabled
Result 
The block size is changed and caching resumes.
Parent Topic: Setting the cache size for virtual machines


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