With Ceph recommendation, 1TB HDD will require 1GB RAM, Mars 400 only has 4GB RAM on each microserver, does it support HDD with a bigger size than 4TB?

Ceph storage appliance integrates tuned software stack and purpose-designed Arm server offers outstanding performance, reliability, web UI, and TCO reduction.

With Ceph recommendation, 1TB HDD will require 1GB RAM, Mars 400 only has 4GB RAM on each microserver, does it support HDD with a bigger size than 4TB?

Indeed, on Ceph documentation hardware recommendations, A general rule of thumb is ~1GB of RAM for 1TB of storage space, however, this rule is more applying to the centralized architecture on general x86 server, when the powerful server motherboard shall allocate RAM resource to different OSD daemon.

Mars 400 ARM server is with microserver architecture, with 1xhost vs. 1x OSD, and each OSD has its dedicated hardware resource including CPU, memory, onboard flash and disk, so we don't need to follow the general rule of 1GB of RAM for 1TB of storage space.

Today, Ambedded Mars 400 (or Mars 400SES) can support the 3.5"HDD up to 14TB/each.



Ambedded - A professional Ceph storage solution to the market.

Located in Taiwan since 2013, Ambedded Technology Co., LTD. is a Ceph storage solution provider that offers ARM based software defined storage appliances with 60% CapEX saving, 70% less power consumption and 100% scale out advantages.

For Software-defined storage designing and manufacturing, Ambedded team has broad experience to help customers to adopt the ceph solution into versatile industries, such as Telecom, medical, military, edge datacenter and HA required enterprise storage.

Ambedded has been offering customers Ceph storage solutions since 2013, both advanced technology and 20 years of experience, Ambedded ensures each customer's demands are met.