Computers and Technology, 24.10.2019 06:43 LulPink

During routine maintenance on your server, you discover that one of the hard drives on your raid array is starting to go bad. after you replace the drive and rebuild the data, you run diagnostics on the raid controller card with no problems, so you believe you fixed the problem. the next morning you arrive at work and discover that the raid has completely failed. none of the disks are working. your server is still running because you installed the os on a non-raid disk, but all the data is missing, and the server shows that none of your raid disks are found. what might be the problem with your server

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Answer from: jack104365

That is a problem with RAID level 1-5

Further Explanation RAID level 1-5:

RAID level 1. Is disk mirroring, duplicating data without striping? This method can improve disk performance, but the number of disks needed is doubled, including having good reliability because it has back up for each disk and repairing damaged disks can be done quickly because there is a mirror.

RAID level 2. Organizing with error correction code (ECC). Like in memory where the detection has an error using bit parity. For example, for example, for example, each byte in the data, has a corresponding parity of bits that represents the number of "1" bits in the data byte where the bit parity = 0 if the even bits or the parity bits = 1 if the bits are odd.

RAID level 3. It is an organization with interleaved bit parity. This organizing is almost the same as RAID level 2, the difference is that at level 3 it only requires a red disk, regardless of disk collection, this can be done because the disk controller can check whether a sector is read correctly or not (damaged or not).

RAID level 4. It is an organization with interleaved block parity, i.e. uses data striping at the block level, stores a block part on a separate disk for each data block on other corresponding disks.

RAID level 5. Is the organization with the largest interleaved block parity. Data and parity are crossed on all disks including an additional disk. In each block, one disk stores parity and the other disk stores data. For example, if there is a collection of 5 disks, the parity of the nth block will be stored on disk (n mod 5) +1, the nth block of the other 4 disks stores the actual data of the block.

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RAID

Level 1-5

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Class: High School

Subject: Computer and Technology

Keywords: RAID, level, disk

Answer from: Quest

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Answer from: Quest

Click on your profile and select log out on that device

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During routine maintenance on your server, you discover that one of the hard drives on your raid arr...

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