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#1 2008-08-10 12:07:00

PA
New member
From: Sweden
Registered: 2008-08-09
Posts: 2

Does RAID formatting matter when enabling telnet on DNS-323?

I am quite new to the world of Linux and Telnet, so I apology if my question is in the wrong forum.

I have recently bought a Freecom Media Pal Internet radio and found out that its UPnP and the UPnP of my DNS-323 (Firmware 1.0.5) are not competible. As far as I understand, the solution could be to install either Twonky server or Media Tomb on the DNS-323. I assume that in order to do so, I must first intall Telnet and a Fonz plug.

I have read the”Enabling Telnet” guide on the site dns323.kood.org, which I found most useful. Under the heading “Installing Telnet” one is advised that: "The most important is that the files resides on the first disc and in the following structure and that they have rights to execute". I run my DNS-323 with two Hitachi 1 TB drives, which I have formatted to RAID 0. Consequently, my two disks appear as one in the windows environment. Is it possible to install Telnet / Fonz Plug / Twonky server or Media Tomb, despite the Raid 0 formatting?

/PA

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#2 2008-08-11 13:37:03

oxygen
Member
Registered: 2008-03-01
Posts: 320
Website

Re: Does RAID formatting matter when enabling telnet on DNS-323?

Yes. Just copy the files to Volume_1.

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#3 2008-08-11 15:58:43

bq041
Member
From: USA
Registered: 2008-03-19
Posts: 709

Re: Does RAID formatting matter when enabling telnet on DNS-323?

If you plan on putting anything important on your DNS, I suggest you make a full backup copy.  RAID 0 will kill all your data (you may be able to manually get some of it back, but it is very doubtful)  if you have 1 drive failure.  I would certainly reccommend that you do not use RAID 0, but it is of course your choice.  Depending on what you want to do, you may be better off mounting the second drive to a directory on the first drive, so it will act like a large drive.  Tests have shown no significant increase in performance of RAID 0 on this device, over individual drives.


DNS-323     F/W: 1.04b84  H/W: A1  ffp: 0.5  Drives: 2X 400 GB Seagate SATA-300
DNS-323     F/W: 1.05b28  H/W: B1  ffp: 0.5  Drives: 2X 1 TB  WD SATA-300
DSM-G600   F/W: 1.02       H/W: B                Drive:  500 GB WD ATA

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#4 2008-08-13 01:57:49

PA
New member
From: Sweden
Registered: 2008-08-09
Posts: 2

Re: Does RAID formatting matter when enabling telnet on DNS-323?

Thank you for your swift replies, bq041 and oxygen.

I make regular back-up copies on a WD MyBook hard drive that I store in a safe place, so I do have some sort of back-up

Nevertheless I have been reconsidering the RAID 0 formatting on the DNS-323, which BQ041’s reply further underscores. When I first chose to format the DNS-323 into RAID 0 on set up, I did so due to that I was under the impression that RAID 0 would be the fastest and most versatile format…

On second thoughts, I have been thinking about re-formatting the unit into JBOD. Is this possible on the DNS-323? Will JBOD provide any substantial gains compared to RAID 0, if I intend to do further modifications? Is there any other RAID format that would be even more suitable? (I feel no need for RAID 1, since I take regular back-up copies).

Regards/ PA

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#5 2008-08-13 02:25:07

fordem
Member
Registered: 2007-01-26
Posts: 1938

Re: Does RAID formatting matter when enabling telnet on DNS-323?

The DNS-323 offers four possible disk configurations

Separate volumes -
Advantages - all of your storage space is available for your use, a disk failure will result in the only the loss of  whatever data is stored on the failed disk.
Disadvantages - you are limited to a file size as large as the disk you're storing it on.  You have multiple places to search for your data.

JBOD - Just a Bunch Of Disks - on the DNS-323 this configuration concatenates the two disks to form a single large storage volume - data is written to one disk first and when that is filled to the second one.
Advantages - all of your space is available for your use, you can store files larger than the individual disks - up to the capacity of the combined disks - you have only one place to search for your data.
Disadvantages - failure of either disk will result in the loss of all your data.

RAID0 - RAID0 stripes your data across the two disks, the theoretical advantage of speed is not realized in this device (or most NAS devices for that matter)
Advantages - all of your space is available for your use, you can store files larger than the individual disks - up to the capacity of the combined disks - you have only one place to search for your data.
Disadvantages - failure of either disk will result in the loss of all your data.

RAID1 - disk mirroring - the data is written to both disks simultaneously.
Advantage - because the data is stored on two disks, failure of a single disk will not result in the loss of data.
Disadvantage - 50% of the disk capacity is not available for your use.

To my way of thought there is no reason to run JBOD or RAID0 - unless you have extremely large datasets - and if you have a dataset exceeding 1TB, I would question your choice of storage device.

RAID1 provides disk redundancy at the cost of 50% storage efficiency - if you don't need it, don't use it - but - just bear in mind that even with a full backup elsewhere, there would still be some time & effort required to restore the data.

That leaves separate volumes which might be your best bet.

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