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What is RAID 10 vs raid5?
The biggest difference between RAID 5 and RAID 10 is how it rebuilds the disks. RAID 10 only reads the surviving mirror and stores the copy to the new drive you replaced. However, if a drive fails with RAID 5, it needs to read everything on all the remaining drives to rebuild the new, replaced disk.
What RAID configuration should I use?
The best RAID configuration for your storage system will depend on whether you value speed, data redundancy or both. If you value speed most of all, choose RAID 0. If you value data redundancy most of all, remember that the following drive configurations are fault-tolerant: RAID 1, RAID 5, RAID 6 and RAID 10.
What is RAID configuration in server?
A Random Array of Independent Disks (RAID) is a set of multiple drives put together with the purpose of improving a single drives performance. Some RAID configurations provide a speed boost while others provide data protection in the event of failed drives.
Why you should never use RAID 5?
Using RAID 5 is portrayed as an unreasonable risk to the availability of your data. As you know RAID 5 can tollerate a single drive failure. If a second drive dies and the first drive was not yet replaced or rebuild, you lose all contents of the array.
What is the safest RAID configuration?
This RAID configuration is considered the most common secure RAID level. RAID 5 pairs data parity and with disk striping. This configuration requires a minimum of three drives to work, two for data striping and one for a parity checksum of the block data.
Which RAID is best for server?
RAID 5
RAID 5 is by far the most common RAID configuration for business servers and enterprise NAS devices. This RAID level provides better performance than mirroring as well as fault tolerance. With RAID 5, data and parity (which is additional data used for recovery) are striped across three or more disks.
Which is the best RAID configuration for SQL Server?
We are building new Virtual environment for SQL Server and have to define RAID level configuration for SQL Server setup. Please share your thoughts for RAID configuration for SQL data, log , temppdb, Backup files . Backup files–> . Any other configuration best practices are more then welcome . Like Memory Setting at OS level , LUN Settings.
Can you write a log file on RAID 1?
IMHO keeping Log file on RAID 1 would make writing slow as compared to RAID 10. Data needs to be mirrored and would not be much good in terms of capacity as its half due to mirroring. Still I would say RAID 10 even RAID 5 has been seen to have slower writing speed for log files.
Which is the best RAID level to use?
If you can shed some bucks you should go for RAID 10 for all files. Also as a best practice keeping database log and data files on different physical drive would give optimum performance. Tempdb can be placed with data file or on a different drive as per usage.
What should the maxdop be for RAID 10?
MAXDOP – if you have more than 4 cores available then set the MAXDOP at the server level (sp_configure) to 4 and be prepaid to tweak the setting. If you can shed some bucks you should go for RAID 10 for all files.