Environment Requirements

Table 1 lists the hardware requirements.

**Table 1** Hardware requirements
Server	TaiShan 200 server (model 2280)
Processor	Kunpeng 920 processor
Core	2 x 32-core
CPU Frequency	2600 MHz
Memory Capacity	12 x 16 GB
Memory Frequency	2666 MHz
NIC	IN200 NIC (4 x 25GE)
Drive	System drives: RAID 1 (2 x 960 GB SATA SSDs) Data drives: JBOD enabled in RAID mode (12 x 4 TB SATA HDDs)
RAID Controller Card	Avago SAS 3508

Table 2 lists the software requirements.

Figure 1 shows the physical networking before capacity expansion.

Figure 1 Physical networking before capacity expansion

Table 3 describes the cluster plan before capacity expansion.

**Table 3** Cluster plan before capacity expansion
Cluster Node	Management IP Address	Public Network	Cluster Network
ceph1	192.168.2.156	192.168.3.156	192.168.4.156
ceph2	192.168.2.157	192.168.3.157	192.168.4.157
ceph3	192.168.2.158	192.168.3.158	192.168.4.158

Table 4 describes the client plan before capacity expansion.

**Table 4** Client plan before capacity expansion
Client	Management IP Address	Service Port IP Address
client1	192.168.2.192	192.168.3.192

Management IP Address: specifies the IP address used for BMC management (address of the out-of-band management network port).
Cluster Network: specifies the internal IP address (of a 25GE network port) used for data synchronization between clusters.
Public Network: specifies the external IP address (of a 25GE network port) for compute nodes to access the storage node (block devices).
The clients and the front-end network of the cluster must be in the same network segment. 25GE network ports are recommended.
Before expansion, the Ceph cluster is deployed on x86 servers. This document uses Huawei FusionServer Pro 2288H V5 servers as an example.

Figure 2 shows the physical networking after expansion.

Figure 2 Physical networking after capacity expansion

Table 5 describes the cluster plan after capacity expansion.

**Table 5** Cluster plan after capacity expansion
Cluster Node	Management IP Address	Public Network	Cluster Network
ceph1	192.168.2.156	192.168.3.156	192.168.4.156
ceph2	192.168.2.157	192.168.3.157	192.168.4.157
ceph3	192.168.2.158	192.168.3.158	192.168.4.158
ceph4	192.168.2.197	192.168.3.197	192.168.4.197
ceph5	192.168.2.198	192.168.3.198	192.168.4.198

Table 6 describes the client plan after capacity expansion.

**Table 6** Client plan after capacity expansion
Client	Management IP Address	Service Port IP Address
client1	192.168.2.192	192.168.3.192

Management IP Address: specifies the IP address used for BMC management (address of the out-of-band management network port).
Cluster Network: specifies the internal IP address (of a 25GE network port) used for data synchronization between clusters.
Public Network: specifies the external IP address (of a 25GE network port) for compute nodes to access the storage node (block devices).
The clients and the front-end network of the cluster must be in the same network segment. 25GE network ports are recommended.
Before expansion, the Ceph cluster is deployed on x86 servers. This document uses Huawei FusionServer Pro 2288H V5 servers as an example.
The ceph4 and ceph5 nodes to be added are deployed on TaiShan 200 servers (model 2280).

Parent topic: Ceph Capacity Expansion Guide