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Question On Raid 1?

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RAID works best for drives with the same capacity and using the same (type of) controller. linux hard-drive raid-1 centos-7 asked Dec 19 '16 at 7:05 Bolwerk 24115 2 votes 0answers 38 views Can I move existing Windows 7 setup to a RAID-1 array? Reply Laurens says: February 17, 2016 at 10:40 pm If I understand your first question correctly, you are wondering if you can use a smaller drive for parity compared to the Can't find your answer ? http://hcsprogramming.com/what-is/raid-question-how-can-i-renew-the-data-in-raid-array.php

It requires at least 3 drives but can work with up to 16. Mirroring is used in RAID 1 and RAID 10. Such systems typically use hardware controllers that do support hot swapping. Also the 6Gb per second Sata 3 transfer rate only applies to sequential reads, which are faster than random reads, particularly on rotating media. http://superuser.com/questions/tagged/raid-1

Raid 5 Explained

If two drives fail, you still have access to all data, even while the failed drives are being replaced. Raid 10 c. Reply Mark Davis says: January 26, 2010 at 3:32 am Raid 5 only requires a minimum of 3 disks. It rebuilds from the information left on the remaining good drives.

I deceided to use it on case scenarios such as: if two active disks fail at the same time. The parity data are not written to a fixed drive, they are spread across all drives, as the drawing below shows. Stay connected with him below: LinkedIn | Facebook | Twitter | Google+ Best Careers Developer Tracks SAN Developer Linux Kernel Developer Linux Driver Developer Linux Network Developer Live Training Photos Mentoring Raid Interview Questions And Answers In Linux solved Question about odd RAID1 behavior Question about determining/changing RAID status of my two drives solved Fresh install of 8.1 - question about raid controller solved Question about moving a RAID1

You can also subscribe without commenting. Raid Interview Questions And Answers Pdf In case a drive fails, data do not have to be rebuild, they just have to be copied to the replacement drive. Are the removable mirrored drives (CRU and G Tech) a good solution to this issue. http://serverfault.com/questions/203185/raid-1-disk-failure-question Why does this procedure fail?

Its a well written explanation regarding the RAID function. Raid Performance Comparison Would Raid 3 be better than Raid10? a. If you have existing data that you are mirroring, you must create the primary submirror, then attach additional submirrors so they can be updated with the data that is contained in

Raid Interview Questions And Answers Pdf

Only one Raid level can be applied in a group of disks. https://www.prepressure.com/library/technology/raid Such was possible with the following: mdadm -grow /dev/md0 -raid-devices=3 -add /dev/sdxx Error occurs: mdadm /dev/md0; could not set level to raid4….. Raid 5 Explained Here's write speed - Code: $ time dd if=/dev/zero of=afile bs=1024 count=1000000 1000000+0 records in 1000000+0 records out 1024000000 bytes (1.0 GB) copied, 22.0697 s, 46.4 MB/s real 0m22.115s user 0m0.240s Raid Configuration Calculator What to do with 250 seeds!

Why is there no `nand` instruction in modern CPUs? http://hcsprogramming.com/what-is/what-is-the-best-raid-setup-for-this-situation.php I have a the following setup: machine with one 1TB hdd and with W7Ultimate installed on that drive (with RAID in BIOS). I would expect that, in future, most Intel chipsets deployed on new mobos will use virtually the same RAID management systems, so that they would have no trouble working with HDD's For company servers, RAID 6 is probably the way to go right now. What Is Raid Technology

  • RAID 1 is a very simple technology.
  • So RAID 6 is more secure than RAID 5.
  • I have a 4 drive NAS system that uses EXFAT (FAT64) and was considering RAID 1+0 but really didn't want to lose all that storage.
  • hard-disk array raid1 asked Aug 28 '16 at 21:39 Infogeek 31 4 votes 0answers 101 views RAID-1 / LVM server won't boot after power outage Strange issue.
  • Get the answer Best answer PaperdocApr 19, 2012, 1:51 AM When using any RAID1 system, you should NOT plan to disconnect any RAID member during operations.
  • I'm no RAID0 fan.
  • Reply GimmeAnESP says: May 29, 2015 at 5:11 am So, if one had two 500gb HDs and a 1tb WD My book along with a 2th My passport ultra, what would
  • Isn't this essentially RAID 1?
  • I look at my disks. 1 disk has some really old files on it.

more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed Please reload CAPTCHA. + = sixteen Navigation Home Design Basics Troublefree Output Troubleshoot InDesign Prepress Workflow Systems Prepress History Printing Printed Products Printing Industry Printing Processes History of Printing Printing Museums For SATA3, the 6 Gb/s indeed refers to the transfer speed. have a peek here linux raid raid-1 lvm luks asked 3 hours ago Sidias-Korrado 1286 0 votes 2answers 23 views Linux RAID Mirror only half size I just bought a couple 4TB WD Reds and

Reply Aryan says: October 27, 2012 at 9:36 pm The way you have explained using simple terms I really liked it. What Is An Advantage Of Raid 5 Over Raid 1 Quizlet As the rpm repository of Fedora 6 is not updated anymore, I'm planning to migrate the data to a new server. mudd says: February 26, 2013 at 8:57 am Hi, just want to check if i understand.

I am planning to test some btrfs configurations on a HDD (Single platter) which has non reliable sectors.

Windows boots up and does not see my RAID array. Saving our data by fault tolerance & high availability. If it involves an external drive connected to your computer via eSATA or Firewire, those two are almost as fast as internal. What Is Parity In Raid When should I create a two-way or three-way mirror with a single command?

asked 6 years ago viewed 632 times active 6 years ago Blog Women in the 2016 Stack Overflow Survey Related 0Can I have a RAID 1 pair with different capacity disks?1Install I want to mark one of the disks as a spare so it ends up being 2 active + 1 spare. If newlines are converted to spaces, then where does catcode 5 come into the picture? Check This Out It is ideal for file and application servers that have a limited number of data drives.

Advantages RAID 1 offers excellent read speed and a write-speed that is comparable to that of a single drive. Now coming my question. SO: you MUST still have a backup system. If you attach a separate box containing two or more drives to a computer and those drives are running in a RAID configuration, there is a circuit board in that box

for this valuable information. I moved my library and now I want to add 2x3TB drives also in RAID1 but in a new volume. Can be Used in Large Arrays. share|improve this answer answered Nov 17 '10 at 22:34 erimar77 44528 add a comment| up vote 0 down vote If you install all the software that came with the machine it

If any one of the disk fails in RAID 1, we can get the data from other one as there was a copy of same content in the other disk. I know that adds to the cost but I like having a spare copy of data and I like having systems with disks that are all the same size. How is it that RAID arrays still manage to provide more data protection compared to a single disk? big circle in math mode Have orchestras included any modern instrument lately?

So there is zero data loss. Related Resources solved Question about using Raid 1 with 3 drives to make weekly backups of the array NOT a noob question about RAID?!?1 WTH?! a. 2 sets with 3 disks each b. 3 sets with 2 disks each c. 4 sets with 3 disks each d. 4 sets with 1 disk each View Answer Answer:b,