Highlights of server raid1 Problems

Question 1: Assume that RAID is in our group.

1. One of the hard disks has crashed. How can I determine which one has a problem ?!

2. How can I replace the faulty hard disk? Shut down, remove the problematic hard disk, and change it to a new one ?! Does the image disk automatically Resync data ?!

3. Can I use multiple hard disks for group RAID 1.

4. Group RAID 1. Whether two hard disks must be reformatted before they can be used.

5. It is safer to use a array card for RAID chips on the motherboard.

Answer:

1: Check the port number.
2: simply remove the new mountainous area.
3: Unknown
4: No. You can directly set a primary disk, and then automatically mirror the second disk.
5: Hard to say

Troubleshooting for brothers RAID 1 is as follows:
A. first, RAID1 requires two hard disks of the same brand with the same specification. There are two types of faults: Data damage and hardware damage (the hard disk itself is damaged) if it is the former, you can still read the data. You can use it! The latter can be read for two minutes and cannot be read!
B. The simplest way is to remove one of them first and then read whether the other is OK. For example, if OK is removed, it is a problematic hard disk! Test another disk! Is to use exclusion to find! If it is a array box, the disk will be displayed! Now, Intel has a tool to show the health status of the hard drive on the current port. This is more intuitive !!!
C. After you confirm that the disk is damaged, it will be automatically reorganized and repaired after the same hard disk is replaced. the time consumed is related to the hard disk capacity. The larger the capacity, the longer it will take !!

Question 2

Xuefeng975 user's question: There are three hard disks on the computer, one is the system disk, and the other two TBS are RAID 1. Now the array is stuck in the array. How can we restore the data?

York284: the hard disk should be broken. Try a new disk and press the shortcut key to enter RAID management. There is a self-check. Choose to set the backup disk. After the backup disk is created, You Can rebulding it; you can also enter the system, start the Management Program, and enable the program to automatically rebulding. We recommend that the system rebulding itself. During the operation, it is best to perform step-by-step operations on the array card instruction. If you make a mistake, the consequences will be very serious.
Sad reminder, take a place, also want to learn.
Use diskgenius to search for partitions. Data is important. Do not recreate the array.

Question 3

The raid 1 data disk is broken, but can it be attached directly with a new hard disk?

Raid 1 breaks down a hard disk.
REMOVE the bad ones and replace them with the new ones. In the RAID control, ADD/remove spare (ADD idle disk). After the disk is successfully added, the RAID status is rebuild.

Question 4

A computer uses a RAID card for RAID1 and cannot be started now. Is there any way to read the data on the hard disk?

Well, I tried it just now. Sure you can! That is to say, after RAID1 is completed, two hard disks can be read by directly inserting them into the computer?

Question 5

Can raid1 work with a hard disk? I don't know how to create a raid volume. How can I name one disk as raid?

First of all, the principle of raid1 is that two hard disks synchronize data. Simply put, they are images of each other. If one hard disk cannot work
Raid1 the meaning of raid1 is lost when I break down a disk and discard the entire array.
So one disk can work, and I tried it on intel's raid chip.

The following are some simple cases that I personally know.

Generally, raid0 can combine multiple small hard disks into a large space hard disk, which increases the read/write speed. For example, if two 2 TB hard disks are used as raid0, they are 4 TB, this method may be used by many large-scale download sites.

Raid1 is generally applicable to scenarios that focus more on data security. A two 2 TB hard disk group raid1 is a 2 TB storage space. If the two hard disk data are synchronized, you can refer to the above method to fix the problem, the good news is that it is safer to copy a good hard disk to another computer and then operate it.

RAID 5 is a storage solution that combines storage performance, data security, and storage costs. RAID 5 can be understood as a compromise between RAID 0 and RAID 1. RAID 5 can provide data security for the system, but it is more secure than Mirror, and the disk space utilization is higher than Mirror. RAID 5 has a Data Reading Speed similar to RAID 0, but has an additional parity information. The data writing speed is slightly slower than that of a single disk. At the same time, because multiple data correspond to one parity information, the disk space utilization of RAID 5 is higher than that of RAID 1, and the storage cost is relatively low.