This tab allows you to set disk roles on the CCBoot server. Click on the “Disks” tab to access it.
- Click on the unused disk and specify what type of disk this will be. There are four options: Unused, Game, Image, Write back, and SSD. Here, we choose D: as an Image disk(Figure 1).
Note: When you change the disk type, the corresponding disk’s name will be changed to reflect the disk type.
- Now the disk is set as an Image disk. Now let’s setup disk cache. On the RAM Cache field, enter desired RAM cache value for the disk. Press “OK” to apply the settings (Figure 2).
Note: Only a game disk can have SSD Cache option available.
- Similarly, set Game disk, Image disk and its cache (Figure 3).
- If you have an SSD you can set it, like other disks. For SSD, there is no need for RAM Cache so it is not available (Figure 4).
Note: If you forget to set either the writeback disk and/or image disk then by default it will use C: as image disk during upload and writeback disk for clients.
Disk cache settings
We are using the Ram for disk cache.
RAM read write speeds are over 5GB/s while normal SSD can barely reach 200-500 MB/s. So, using RAM for caching once the files have been read into the RAM cache, subsequent access to the same files is really fast and makes game load as well as client boot faster.
There are SSD that have read speed over 2GBps but they are very expensive, thus using RAM as cache is both economical as well as providing better performance.
If you cannot use SSD for a game disk, you can use a hard disk +SSD cache.
Recommended cache settings
If server have 8 GB memory:
SSD Cache (256 GB)
If server have 16 GB memory:
SSD Cache (256 GB)
If server have 32 GB memory:
SSD Cache (256 GB)
If you want to know if ram cache is working you can test it via Crystal mark
you also see your motherboard if running in SATA 3gbps or 6gbps speed
Here is the image when you test without ram cache sample image disk click "all" button.
After applying 1024 ram cache on the image disk click the "all" button and wait for the result.
- If you have more than 20 users then consider having two Writeback Disks
- New version of CCBoot does not require SSD Cache for Image Disk and Writeback Disks
- Please refer to “Disk Management” to set up disk cache according to above.
- There is no need to set more than 2048 MB Cache for Writeback disk.
- If you have 2 or more Writeback disks, set 2048 MB cache to them as well.
- For the image disk, set 2048 MB for every image you have. if you have 2 images then set 2 x 2048 MB cache.
- Nowadays, 256 GB is the minimum SSD available on the market. So, If you have more than one game disk then divide the SSD cache by number of disk (if 2 disks then set 100 GB SSD Cache each, if 3 then, about 70 GB each)
- Never set 100% of SSD size as SSD cache.
- If you are using a Samsung SSD disk then follow as above and then set the cache, however if you are using any other brand then please reduce the writeback disk RAM Cache to 1024 MB only. Other disk has lower read/write speeds than Samsung so for writeback disk better to use less Cache as it makes it faster to dump to the disk
- When your server is turned on for the first time and your clients boot and load games then the idle % for the game disk will be low and can reach 0% idle. This is normal as the server does not have any cache in RAM at first.
- If you are using NVMe SSD then format the SSD to 64K allocation unit to get best performance, any other allocation unit the performance was found to be less than on 64K allocation unit.
If the cache is not working after you have set it then do the following.
- Restart the server. After restart the CCBoot service will start in startup and make the cache work.
- If the above does not make Cache work, then re-install the CCBoot and then reboot the server once.