Who Needs RAID?
Reply Laurens says: January 12, 2015 at 11:07 pm I cannot give you a short and relevant description of how to do this, especially not without any knowledge of your setup. These are not standardized by an industry group or standardization committee. Advantages If something goes wrong with one of the disks in a RAID 10 configuration, the rebuild time is very fast since all that is needed is copying all the data Often extra cache memory is used on these controllers to improve the write performance. http://hcsprogramming.com/what-is/raid-question-how-can-i-renew-the-data-in-raid-array.php
You were very helpful. Disadvantages The main disadvantage is that the effective storage capacity is only half of the total drive capacity because all data get written twice. that type of setup would be great for testing purposes, (not for speed obviously), if you are lacking resources. It says on the 5.25" drives that it has a 5.25" to 3.5" converter.
What Is Raid Storage
As an example, with the 5% annual failure rate of drives, if you have a 6 disk RAID 0 array you've increased your risk of data loss to nearly 27%. Striping breaks data into “chunks” that are written in succession to different disks. omv 1.16 kralizec | 64 bit | omvextrasorg 1.15 24hoursofhappy.com/ Quote Report Content Go to Page Top Carlos05 Student Likes Received 7 Posts 158 4 Feb 12th 2015, 5:10pm nothing more With 4 disks, you will only loose 1/4 of your HD space.
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- And I definitely agree with you and can see how raid can be useless in comparison to using a server.
- Additionally, if you go with hardware RAID, the hardware RAID card will include additional memory to be used as cache, reducing the strain put on the physical hardware and increase overall
- On the COOLER MASTER RC-690 it says it has 5 internal 3.5"drives.
RAID Is Not Backup Here's one important caveat about RAID and backup. Is SATA 2 faster, thats the only difference. Submit Comment Search the Blog Find Register for Updates Our team of experts share their insights, keeping you in the know. Raid 6 If I use RAID 1, what is my effective capacity?
With a single hard disk, you cannot protect yourself against the costs of a disk failure, the time required to obtain and install a replacement disk, reinstall the operating system, restore It used to work…. Parity data is a smaller amount of data derived mathematically from a larger set that can accurately describe that larger amount of data, and thus serves to restore it. http://www.techspot.com/community/topics/who-needs-raid.49757/ There are various products out there designed to address these various needs, it's a matter of matching the best one for your specific need.
Wikipedia - or wherever else you got the definitions from - not so much. Jbod In one report I read the write performance was 20% lower. In Raid 1, you gain the reliability but you lose half your space(and lose speed i think?).I was thinking about putting 3 of these wd 640gb hardrives together in raid 5. What else do I need to know.
What Is Raid 0
If you want capacity over speed though, RAID 5 is the way to go. http://www.tomshardware.com/forum/246197-32-raid-what-know-worth-newbie-here RAID 1+0: Not sure. What Is Raid Storage Using the parity data, the computer can recalculate the data of one of the other data blocks, should those data no longer be available. Raid 10 miguel says: August 17, 2012 at 3:19 pm hello i have 4 hd 2 are 1t and 2 are 1.5t whats the best raid setup i should use Reply Loz says:
Now lets look at RAID 5. http://hcsprogramming.com/what-is/what-is-the-best-raid-setup-for-this-situation.php Joe ATT Corp West Demoines IA Reply RAKHILESH says: August 23, 2011 at 5:31 am what is raid7? which is a Mirrored Strip. You must use some means of backup or you will eventually regret it. Raid Controller
Fortunately hard drives do not fail often. Drive failures have an effect on throughput, although this is still acceptable. For company servers, RAID 6 is probably the way to go right now. useful reference russkiJul 2, 2008, 5:48 AM "What is a z-j?""If you have to ask, big man, you can't afford it..."What geofelt said.PS.
Reply Kingsley says: December 4, 2009 at 11:59 pm I need to deal with very large data set with typical file size of 1-7gb, hundreds of them, in a workstation. Raid Calculator boykalbo says: July 2, 2012 at 10:07 am Im thinking of using the Raid 5 for my server for our business, thanks for the infor Reply Sonia says: June 26, 2012 If a drive fails, you still have access to all data, even while the failed drive is being replaced and the storage controller rebuilds the data on the new drive.
Again, source, articels, etc.?
With RAID 5 you'll need at least three drives, so two additional drives, and with RAID 6 or 10 you'd need at least four total drives. NEVER had any issues with rebuild, growing etc. Thanks 1. Synology They run 45 drives in 3x15 Drive Raid6 Sets per 4HU.
So, you may ask: why wouldn’t I use RAID 5 instead? Back-ups can be kept off-site at a different location. moomoopro said: Please tell me WHY exactly raid 5 is impractical on a desktop setup! this page The only destructive force that RAID can protect against is hard drive failure.So since RAID isn't a substitute for backup, you're going to have to put a backup plan in place
Accidental errors like incorrectly deleting a file or misplacing it or data corruption are more common and a bigger worry. If my machine goes south for whatever reason, I can access the NAS from any other box on the network. thanks.. tleavitJul 2, 2008, 6:35 AM If you can afford it, do it.
JackNaylorPEJul 2, 2008, 7:57 AM I don't really "get" RAID in a PC anymore.