Solved

freeNAS / RAID

Posted on 2013-11-25
5
725 Views
Last Modified: 2016-12-08
Hi,

I am new to NAS & got a few questions
I am also using freeNAS

1) RAID 0 vs RAID 1
I understand that in RAID 1, if a HD fails, the data is mirrored
What about RAID 0 when it is stripped, if you lose one HD, do you lose half of your data?

2) so far, there is no much difference between a file server & NAS?
Could you please explain the difference?

3) Do you backup to NAS using any backups software?

Thanks
0
Comment
Question by:defrey
5 Comments
 
LVL 88

Assisted Solution

by:rindi
rindi earned 135 total points
ID: 39676399
Correct, if any small detail fails in a RAID 0 array, you loose all data, while in RAID one you can loose one disk and the data is still good. There are further RAID configurations where you can loose 1 or more disks without loosing data.

A server is a PC where you install an OS which usually is pretty complex and which includes many options where you can add things and services, while a NAS usually has a stripped down, highly specialized, embedded OS which is geared to only do the task it is supposed to do.

Backup depends on the NAS and the OS on the NAS. Usually you can use standard backup tools that can backup to a LAN location. Some NAS also include backup modules. Often they support rSync or some utility based on rSync. Often they also have the possibility to connect an external USB drive and have a push-button type backup to that external disk.
0
 
LVL 70

Assisted Solution

by:garycase
garycase earned 135 total points
ID: 39676513
"... What about RAID 0 when it is stripped, if you lose one HD, do you lose half of your data? " ==>  No, that's not correct.   You lose ALL of your data.

"... so far, there is no much difference between a file server & NAS? "  ==>  Apples and Oranges.     The FUNCTION of a file server can be implemented in many ways ... it can be one of the roles of a dedicated server OS (e.g. Server 2008 or Server 2012); or it can simply be what a particular PC is used for (e.g. a Windows 7 PC can be used as a file server).    It just means it's a computer that's used to serve files.    A NAS is a specific type of storage device ... it's a storage system that's accessed via the network.    A PC used as a file server may store those files on a NAS, just as it may also store the files internally.    A NAS device with an embedded OS (as many are) can in fact serve as a file server ... that's no different than a typical server OS with a RAID controller doing everything from the same physical PC.
0
 
LVL 1

Author Comment

by:defrey
ID: 39676585
so.....

Would you use NAS as a backup solution or a file server?
0
 
LVL 70

Expert Comment

by:garycase
ID: 39676799
I have two NAS systems => I use one as essentially a file server (but only for media files); and the other for backups of all of our PCs except the other NAS, which I back up independently to a set of disk drives I cycle through external docking stations.

For a traditional file server, I'd use an actual server OS instead of a NAS appliance, as you'll get much better read/write performance.
0
 
LVL 46

Accepted Solution

by:
noxcho earned 135 total points
ID: 39676883
1) RAID 0 vs RAID 1
I understand that in RAID 1, if a HD fails, the data is mirrored
What about RAID 0 when it is stripped, if you lose one HD, do you lose half of your data?
Yes, you understand it correctly. If striped set drive fails then the whole data on the stripe is lost as well. Not the half but most of it.

2) so far, there is no much difference between a file server & NAS?
Could you please explain the difference?
Let's say that NAS is a network connected file server. So you are right again, file server can be configured also using Windows share and NAS is mostly using Samba sharing with EXT3/4 file system formatted drives.

3) Do you backup to NAS using any backups software?
Yes, that is standard approach to save backups on NAS storage. It is also recommended that you do not rely on a single NAS and do archiving to additional storage which could be second NAS or another storage.
0

Featured Post

U.S. Department of Agriculture and Acronis Access

With the new era of mobile computing, smartphones and tablets, wireless communications and cloud services, the USDA sought to take advantage of a mobilized workforce and the blurring lines between personal and corporate computing resources.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

VM backup deduplication is a method of reducing the amount of storage space needed to save VM backups. In most organizations, VMs contain many duplicate copies of data, such as VMs deployed from the same template, VMs with the same OS, or VMs that h…
When we purchase storage, we typically are advertised storage of 500GB, 1TB, 2TB and so on. However, when you actually install it into your computer, your 500GB HDD will actually show up as 465GB. Why? It has to do with the way people and computers…
This video Micro Tutorial explains how to clone a hard drive using a commercial software product for Windows systems called Casper from Future Systems Solutions (FSS). Cloning makes an exact, complete copy of one hard disk drive (HDD) onto another d…
This Micro Tutorial will teach you how to reformat your flash drive. Sometimes your flash drive may have issues carrying files so this will completely restore it to manufacturing settings. Make sure to backup all files before reformatting. This w…

809 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question