User manual

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Cache Acceleration
Based on SSD technology, the Cache Acceleration feature is designed to boost access
performance of the NAS. On this page, you can both monitor SSD performance and manage
cache acceleration for your NAS. This chapter covers the following topics:
 Feature Requirements
 Creating SSD Volumes
 Removing SSD Volumes
 Expanding SSD Volumes
 Configuring Volumes for SSD Cache
Feature Requirements
SSD drives must be installed to enable this function and this feature is only available for
certain NAS models, with memory requirements. Refer to the following link for details:
https://www.qnap.com/i/en/enterprise_apply_v2/con_show.php?op=showone&cid=7
Refer to the table below for memory requirements:
Cache Capacity
RAM Requirement*
512 GB
from 1 GB to 4 GB
1 TB
from 4 GB to 8 GB
2 TB
from 8 GB to 16 GB
4 TB
Above 16 GB
*For example, for 1 TB of SSD capacity, at least 4GB RAMs are required for the NAS.
On this page, users can choose to create, remove and expand a SSD volume and configure
the SSD cache.
Creating SSD Volumes
Follow the steps below to create a SSD volume:
1. Click "Create".
2. Select the SSD drive(s) and cache algorithm to create a SSD cache volume.
3. Select the cache type: Read-Only or Read/Write.
4. Click "Create".
5. Please note that all data on the selected hard drive(s) will be erased. Click "OK" if you
are certain about this.