Dell DELL server RAID array method_super detailed graphic tutorial
Dell DELL server RAID array method_super detailed graphic tutorial
1. Summary
1. Example [server](/search?q=server) model
The server used in the main demonstration environment here is a DELL-R7XX generation server (such as R740), and the specific model will be treated separately!
2. Brief description of common RAID methods
The following explanation is a brief summary of the editor's personal understanding. If you have any loose understanding, please point it out in the comment area or send a private message for discussion! grateful
RAID0: Improve read and write performance, at least two hard disks with a capacity of N and a capacity of 2N. If any disk is damaged, data will be lost.
RAID1: improves data security, improves reading performance, cannot improve writing performance, is a data backup disk, at least two hard disks with a capacity of N, and a capacity of N
RAID10: Improve security first, then improve performance. At least 4 hard disks with a capacity of N and a capacity of 2N. RAID10 is safer than RAID01 (reflected in the fault tolerance rate)
RAID5: Improves security. The security is lower than RAID10 (in the case of three disks). There is no advantage in reading and writing large files. The reading and writing capabilities of small files are lower than RAID10. The minimum is three disks and the capacity is 2 fast disks. At most one disk will be damaged
RAID5+RAID1: RAID5+hot spare disk, two disks can be damaged
2. Create a RAID array
1. Start the server
(Pay attention to the picture below and press the shortcut key Ctrl+R when booting)
2. Enter the array list
You will see the hard disk information installed on the server (number, disk size, etc.)
3. Delete the previous RAID
This demonstrates the steps of deleting and redoing previous historical settings. You can actually do it according to your needs.
As shown in the picture, I have historical information such as RAID1 and RAID5 here. How can I delete it and start over?
4. Create RAID
Select the disk to the server (the disk group you want to create),press F2, a menu will appear, select Create New VD as shown
5. Select RAID type
You can see various RAID types and related filling information (basic information, advanced settings are default)
After selecting the RAID type, select which disk you want and create the corresponding RAID (multiple disks can be used to create multiple RAIDs, as long as you have enough disks)
6. Initialization takes effect
It is recommended to initialize the disk before use.
7. Other disk RAID
This refers to other disks on the server and other RAIDs. The operation is the same as above.
For example: I used several disks to create RAID1 and the remaining disks to create RAID5.
8. Select RAID1 as the Boot item
9. Exit and restart the server
At this point, the RAID array is basically ready, and you can restart the server to do other configurations! You’re done here!
Thank you all for your support, please like, comment, interact, follow, repost, and work hard together! I wish you all less downtime and lots of hair in the future!