Installing the OS on a server with one hard disk

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If the server is configured with an LSI1064/1068/2308/3008 RAID card, at least two hard disks are required for configuring RAID. If there is only one hard disk, you can install the OS on the hard disk without configuring RAID.
If the server is configured with an LSI1078/2208/3108 or SoftRAID, the single disk must be configured with RAID0 before you install the OS.

Other related questions:
Quantity of OSs required for installing OSs on multiple Huawei servers
The following rules explain the quantity of OSs required for installing OSs on multiple servers, regardless of the server vendor. If licenses are not involved, an OS can be installed on multiple servers. If licenses are involved, there are three cases: 1. An OS can be installed only on one server. 2. An OS can be installed on multiple servers, but the number of login users is restricted. 3. An OS can be installed for only one CPU. This is usually the case for midrange computers and virtual machines.

Installing OS on a server
Use the Huawei Server Compatibility Checker (http://support.huawei.com/onlinetoolsweb/ftca/en) to check the OS supported by the server. For details about the OS installation methods (using ServiceCD, DVD-ROM drive, image, and PXE), see OS Installation Guide. For details about the OS installation cases (including centOS, Citrix, Debian, Fedora, FreeBSD, Kylin, Oracle Linux, RedFlag, RedHat, Rocky, Solaris, SUSE, Ubuntu, VMware ESXi, and Windows), see http://support.huawei.com/huaweiconnect/enterprise/thread-286397.html.

Hard disk capacity of servers
For details about the hard disk types and capacities, see the server compatibility list.

Installing hard disks for the USG6000 series
For the USG6000 (1 U device), perform as follows to install the hard disk combination SM-HDD-SAS300G-B for the first time: 1. Loosen screws on the filler panel and remove the filler panel. 2. Hold the two side surfaces of a hard disk unit, push the hard disk combination into the slot along the guide rails until it is well seated into the slot, and fasten screws on the two sides of the hard disk unit. 3. After that, run the display disk information command in the user view. If Filesystem Status is Mounted in the command output, the hard disk is successfully installed. For the USG6000 (3 U device), perform as follows to install the hard disk unit SM-HDD-SAS300G-A for the first time: 1. Remove the filler panel from a hard disk slot. 2. Hold the handlers of the tray and push the tray along the guide rails inside the hard disk slot till the tray panel aligns with the panel of the device. 3. Press the tray handler inwardly to restore the tray. 4. If there are two hard disks, repeat steps 1 to 3 to install the other hard disk. 5. After the installation completes, check as follows: -If a single hard disk exists, run the display disk information command in the user view. If Filesystem Status is Mounted in the command output, the hard disk is successfully installed. -If two hard disks exist, run the display disk information command in the user view to check whether the Filesystem Status value is Un-Mounted and the DiskRaidMode value is INACTIVE. Then, in the system view, run the reset raid primary-disk disk-id command to create a RAID group using disk-id as the primary disk for data synchronization. The synchronization process will take several hours. During data synchronization, other services can be used, but the hard disks do not record real-time logs for the services. After data synchronization completes, the hard disks automatically start to work. You can run the display disk information command in the user view on the next day to check whether Filesystem Status is Mounted. If no, contact Huawei technical support personnel. When a hard disk is faulty, replace it. For details, see content relevant to replacing hard disks on the USG6000 series in the product documentation.

Impact of removing and installing hard disks without powering off the server
1. LSISAS2208 RAID controller card: If no hot spare disk is configured, the RAID controller card can rebuild data on a new hard disk installed online to replace a faulty hard disk. (The new hard disk must be of the same specifications as the faulty hard disk.) However, if you remove and reinstall a hard disk that is not faulty, the LSISAS2208 RAID controller cannot identify the data on the hard disk. 2. LSISAS2308 RAID controller card: If you remove and install a hard disk without stopping services, the LSISAS2308 RAID controller card can identify data on the hard disk no matter whether the hard disk is new or not.

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