Name

Project

recommended value

Precautions

Server

RAID Card

1. Passthrough (JBOD, non-raid) mode must be supported.

2. The cache disk and data disk must be configured in passthrough mode.

3. RAID1 is supported. (used by the third-party service system disk).

4. Use aDeploy tool to check the compatibility of raid card and raid card firmware. Hardware that does not meet the requirements will not be allowed to add to virtual storage.

Raid0 mode is prohibited for cache disk and data disk.

CPU

It is recommended that the CPU dominant frequency be greater than 2.0GHz. (server-level CPU is recommended).

1. It is forbidden to use CPUs with less than 8 threads.

2. Support HCI deployment to servers equipped with Haiguang 7159 CPU.

3. If using Haiguang CPU:

a. Mixed deployment is not supported, and only Haiguang CPU can be used in the same cluster.

b. NUMA scheduling function is not supported.

c. Heterogeneous migration is not supported.

d. Windows virtual machine is prohibited from turning on the high-performance clock.

RAM

RAM shall not be less than 64G.

For Nodes with less than 32G RAM, aSAN, aNET, and aSV are prohibited from fully enabled.

System disk

1. Enterprise hard disk is recommended for system disk.

2. The capacity shall not be less than 128G.

3. The third-party service uses two disks to make RAID1.

1. The server system disk is prohibited from deploying a single disk RAID0.

2. It is forbidden to use SD card as HCI system disk. The reason why it cannot be used is that it has problems in reliability, performance, and stability.

Data disk

Distributed storage uses SSDs as cache disks.

SATA (or SAS) is used as the data disk.

SSD: the higher the HDD capacity ratio, the better the overall performance.

Use aDeploy tool to check the compatibility of SSD Firmware. If it does not meet the requirements, it will not be allowed to be added to virtual storage.

1. Non enterprise HDD disks are prohibited.

2. It is forbidden to use HDD Hard Disks with 7200 rpm or less.

3. It is forbidden to use a hard disk less than 600G as a data disk. (4T and above is recommended)

4. 4Kn disks are prohibited for versions lower than 6.2.0 or 2 hosts virtual storage clusters. 4Kn disks are supported since version 6.2.0).

5. It is forbidden that the capacity ratio of SSD cache disk or HDD data disk is less than 1:20 (the recommended capacity ratio in best practice is 20%).

6. If a read-intensive SSD is used, the SSD cache disk or HDD capacity ratio cannot be less than 7%.

7. The SSD cache disk or HDD data disk ratio cannot be less than 1:6.

8. The sum of data disk capacity among nodes and the maximum capacity cannot exceed 80% of the sum of all remaining nodes.

9. Differences in the capacity of data disks in a single host are allowed, but the capacity difference between the largest and smallest data disks should not exceed 2 times.

10. Whether in the test or implementation stage, the number of cache disks cannot be greater than the number of data disks.

11.  requirement The SSD interface rate is 6gbps. If the rate is 3gbps, it is not allowed to join the virtual datastore.

12. HDDs with a rate lower than 50MB/s are prohibited from joining the virtual datastore.

13. SSD data disks (flash) with IOPs less than 10000 are not allowed to join the virtual datastore.

Cache disk

1. Non enterprise SSDs are prohibited.

2. The cache disk cannot use SSDs smaller than 240GB.

3. SSDs with DWPD less than 1 are prohibited (the spec parameter table of SSD can be found).

4. Do not use SSDs that do not support power-down data protection.

5. SSDs with IOPs less than 30000 are prohibited from joining the virtual datastore.

Switch

VXLAN

Administration

Service switch

Support Stack/M-LAG and the VXLAN switch support jumbo frames (adjust MTU value).

Disable the selection of switches that do not support jumbo frames. (some vendors call it MTU interface).

Storage switch

1. A 10 Gigabit switch must be used.
2. To configure a storage area network using RDMA, the switch NIC must support the RDMA feature, and the switch is recommended to be configured with a congestion control algorithm.

1. Gigabit switches are prohibited for private storage networks.
2. If the switch of a storage area network using RDMA is not configured with a congestion control algorithm, business services may encounter network congestion during off-peak hours.