How do I add SSD cache to Synology NAS?
To mount SSD cache:
- Install the SSDs into your Synology NAS.
- Go to Storage Manager > SSD Cache.
- Select the cache mode (only available for models that support read-write cache).
- Find the drop-down menu and select the volume or LUN on which you wish to mount the SSD cache.
- Choose the SSDs from the list.
- Click Apply.
Does SSD cache matter Synology?
Using SSD cache is not recommended if the amount of frequently accessed data on your Synology NAS exceeds the maximum size of SSD cache or if an application is always under a high load. We recommend storing frequently accessed data and running high-load applications on all-SSD volumes to speed up operations.
How does SSD cache work on Synology?
Synology SSD Cache employs a write-back cache approach in read-write cache to accelerate write operations. When the Synology NAS receives a write request, it stores the data on SSD cache blocks and then acknowledges the write operation to the application server.
How do I set up SSD cache?
Click Enable acceleration under either the Status or Accelerate menu. Select the SSD for the cache device. Select the size from the SSD allocated for the cache memory. Any remaining space on the SSD may be used for data storage, using the single-disk RAID 0 volume that is automatically created.
How much cache Do I need Synology?
Details
| Volume Size | Minimum Size of SSD Cache | SSD Cache Configuration using Synology SSDs |
|---|---|---|
| 24 TB – 40 TB | 800 GB – 960 GB | RAID 1 with 2 * SNV3400-800G/SNV3500-800G or RAID 1 with 2 * SAT5200-960G |
| 40 TB – 80 TB | 1.92 TB | RAID 1 with 2 * SAT5200-1920G |
| > 80 TB | 3.84 TB | RAID 5 with 3 * SAT5200-1920G or RAID 1 with 2 * SAT5200-3840G |
What does SSD Cache do for NAS?
An SSD cache is a way of obtaining faster storage, reduced latency, and improved all-round NAS performance and access speeds by storing frequently-accessed data on SSDs.
How much SSD cache do I need?
Details
| Volume Size | Minimum Size of SSD Cache |
|---|---|
| < 24 TB | 400 GB |
| 24 TB – 40 TB | 800 GB – 960 GB |
| 40 TB – 80 TB | 1.92 TB |
| > 80 TB | 3.84 TB |
Does Synology use RAM as cache?
NAS caching in RAM Frequently requested data blocks are stored in the RAM of the Synology DSM itself, as we have seen many times in synthetic direct file access tests. The RAM caching mechanism is best observed on disk random reads.
Do you need cache on SSD?
SSD caching can also be a cost-effective alternative to storing data on top-tier flash storage. The objective of SSD write caching is to temporarily store data until slower persistent storage media has adequate resources to complete the write operation. The SSD write cache can boost overall system performance.
Is cache important on SSD?
As you can see, the main benefit of SSD caching is most apparent when booting up Windows: the OS is in a usable state much sooner than on a non-SSD cached system. Similarly, launching Steam and your favorite game after a reboot will be much faster with SSD caching.
Is more cache better for SSD?
As more cache hits occur, overall performance improves. When a host program accesses the storage array’s drives, the data is stored in the SSD Cache. When the same data is accessed by the host program again, it is read from the SSD Cache instead of the hard drives.
How important is SSD cache?
SSD caching can also be a cost-effective alternative to storing data on top-tier flash storage. The objective of SSD write caching is to temporarily store data until slower persistent storage media has adequate resources to complete the write operation. The SSD write cache can boost overall system performance.
What size SSD for cache?
Since a 1GB SSD takes up approximately 416KB system memory (including expandable memory), a 2 X 128GB SSD read-only cache (total 256GB) requires at least 104MB memory, while a 2 X 128GB SSD read-write cache (total 128GB) consumes 52MB memory. It should be noted that a lack of memory will, therefore, limit the SSD cache size.
What is SSD cache for in a NAS?
By using an SSD cache, the capacity of the NAS is maximized while at the same time providing the immediate benefits of SSD technology. An SSD cache can be set up by simply installing SSDs into designated bays in the NAS, and then by following a few steps in the Storage Manager. No complicated steps or extra software is required.