What is the difference between the spanning and striping modes in raid?

RAID 0, also known as stripe (strip, string column) or striping, represents the highest storage performance in all RAID levels. RAID 0 improves storage performance by distributing continuous data to multiple disks for access. In this way, the system can execute data requests on multiple disks in parallel, each disk executes its own data request. This type of parallel operations on data can make full use of the bandwidth of the bus, significantly improving the overall disk access performance, RAID 0 is the fastest. However, RAID 0 does not have redundancy. If a disk (physical) is damaged, all data cannot be used. Raid 1, also known as mirror ing (image data technology), allows two groups of identical disk systems to mirror each other. The speed is not improved, but a single disk error is allowed, with the highest reliability. When the primary hard disk (physical) if the disk is damaged, the image disk replaces the primary disk. However, the disk utilization is only 50%, which is the lowest utilization of all RAID disks. RAID 0 + 1 (a technology composed of RAID 0 and RAID 1 arrays) is also known as RAID 0 + 1, a solution that combines storage performance and data security. It provides the same data security as RAID 1, and the storage performance is similar to RAID 0, but the storage cost is high. Take four hard disks as an example, that is, each hard disk is a group, each group stores the same data, and the two groups of data are split by a group of data. jbod, also known as spanning, is composed of hard disks of different capacities. A large hard disk with a small capacity is extended to a large single disk. You do not have to plan the distribution of data on each disk, in addition, the disk space usage is increased, and the disk capacity can be extended almost infinitely.

After a long history of RAID mode development, many users are familiar with raid mode. Here I will share my personal understanding and discuss it with you. Press F10 to enter raid BIOS setup. The NVIDIA raid utility -- define a new array (define a new array) is displayed ). The default setting is raid mode (mode) -- mirroring (image), striping block (string column block) -- optimal (optimal ).
You can use this window to define a new array. The items to be set are: Select raid mode (RAID mode): mirroring, striping, and spanning) and stripe copying ing ). Set striping block (string column block): 4 kb to 128 KB/optimal disk used by the specified raid Array
You can set raid mode, size of the string column block, and disk used by the raid array as needed. The disk used by the default optimal. Raid array is recommended for the size of the string column block through the optical tag key → add.
A raid hard disk can be a primary/secondary disk of the same channel or a primary/secondary disk of different channels. We recommend that you use a primary/secondary disk of different channels, because the bandwidth of different channels is wide and fast. The LOC (location) column shows the channel/controller (0-1)/Master/Slave status of each hard disk, where channel 0 is PATA, 1 is SATA, and controller 0 is master, 1 is slave, M is the master disk, and s is the secondary disk. After the raid array disk is allocated, press f7. to clear the disk data. Press Y to clear the hard disk data. The array List window is displayed. If no problem exists, press Ctrl-X to save and exit, or recreate the configured raid array. Now the raid has been created, the system restarts, And the OS can be installed.
To install Windows XP, a drive floppy disk is required for the system installation. The motherboard comes with XP, and 2000 must be prepared by yourself. Start the Windows XP installation disk from the optical drive, and press F6 when you enter the blue prompt screen to tell the system installer that another storage device driver is required. When the installer copies a part of the device driver, it stops and prompts you to press the s key to specify the storage device driver:
The system prompts you to put the drive floppy disk into the floppy disk. Press the prompt and press Enter. After the system reads the floppy disk, it prompts you to select the driver. The raid driver of nforce is different from that of Intel and via. Two raid drivers are required: NVIDIA raid class driver and NVIDIA nforce storage controller.
For the first time, select the NVIDIA raid class driver, press enter to read data from the system, and then return to the S-key prompt page. At this time, press the S-key, select NVIDIA nforce storage controller, press enter, and the system continues to copy files, then return to the following interface. This interface shows that the system has found NVIDIA raid class driver and NVIDIA nforce storage controller. You can press enter to continue.
After the system copies the required files from a floppy disk, restart the system to check the raid disk. After finding the required files, the system prompts you to set the hard disk. In this case, you can create a primary partition and format it. Then, the system copies the file to the hard disk. Do not remove the floppy disk during system installation until the installation is complete. After installing the system, you can format the remaining disk partitions using the Disk Manager partition of XP. Partition using the XP Disk Manager. Logical disks equal to/less than 20 GB can be formatted as FAT32. The format larger than 20 GB is NTF. The raid mode is described above.