Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.


View this topic in a long page with up to 500 replies per page Create new topic
1 | 2 | 3 | 4 
BDFL
49108 posts

Uber Geek
+1 received by user: 4131

Administrator
Trusted
Geekzone
Subscriber

  Reply # 663012 27-Jul-2012 16:22 Send private message

The port 80/443 combination is for the administration. You can then specify the ports for other access types - I only have a third port open for its web-based File Explorer. Could possibly open a WebDAV port to allow for some mobile apps access to the files but rather not.




1006 posts

Uber Geek
+1 received by user: 8

Subscriber

  Reply # 784317 20-Mar-2013 11:12 Send private message

LookingUp:
Skolink:
billgates: The NAS that freitasm has mentioned, is USD$190 (DS212J + USD$35 shipping) from Amazon. I ordered it last week and now awaiting delivery.


I just had a test at ordering the DS112j but for some reason it won't ship to my address, even though the DS212j (link you provided) will ship. Both are sold by "Amazon.com". If you read the "learn more" information, it basically says that almost everything (other than books) will not be shipped internationally, which obviously isn't true.


I had the same problem with Amazon, so ended up ordering from RC711 in Hong Kong.  Might seem like an odd place to buy from, but the service was great and it even came with a free gift!

http://www.rc711.com/shop/advanced_search_result.php?keywords=synology&x=0&y=0

They also sell QNAP.


Thanks for the recommendation. I bought a DS112J from RC711 last year and I love it.

I first tried persisting with Amazon, and questioned them three times on why the DS212J ships internationally but not the DS112J. The third response was actually an intelligent one; 'That is strange, I'll get the technical department to look into it'. After a week I gave up and ordered from RC711. That was November 2012.

Today, four months later I got a response to say that they had looked into it and the shipping restriction on the DS112J has been removed. So the DS112J can now be ordered from Amazon (directly).

1086 posts

Uber Geek
+1 received by user: 44

Subscriber

Reply # 789531 30-Mar-2013 09:38 Send private message

sorry to butt in.   I have found the benefits of a NAS and rather than have a heap of external drives with backups on, I think having them all on a NAS would be better. So all my music,photos,videos and documents.  Obviously I would want raid 1 I think it is where it mirrors 1 drive to the other.  Therefore I was thinking of a 4 bay unit.  How does it work. Does it use the first pair then switch to next pair as the first ones fill up.  I dont want it all as one big drive as I want the protection of a mirrored drive if one fails.
  Sorry if it has been asked but I couldnt find it in the search. Although using and building computers for years I have never done servers or networking so new to this side.
Thanks




HTPC AMD A4-5300 cpu, Gigabyte ga2fa75m-d3h motherboard, , 4GB DDR3 ram, onboard  graphics. Hauppuage HVR 3300 tuner,  Antec 2480B case, Windows 7 home premium 64 bit using media center

803 posts

Ultimate Geek
+1 received by user: 115


  Reply # 789750 30-Mar-2013 21:12 Send private message

Gilco2: ....  Obviously I would want raid 1 I think it is where it mirrors 1 drive to the other.  Therefore I was thinking of a 4 bay unit.  How does it work. Does it use the first pair then switch to next pair as the first ones fill up.  I dont want it all as one big drive as I want the protection of a mirrored drive if one fails ....
Thanks


No it won't work that way .. but there is nothing stopping you having two RAID-1 sets running (so long as the NAS is semi decent and supports it), you will have 2 filesystems though.  Or you can go RAID-10 which will take all 4 and give you 2 drives worth of capacity.

If you have a 4 drive unit the most economical configuration is to go RAID-5, it will give you 3 drives worth of capacity (1 drives worth of capacity gets used for parity) and be able to withstand the failure of any 1 of the 4 drives and keep on working (although a bit slower as it does the XOR calculations on the fly) ... as soon as you replace the dead drive it will rebuild the data onto the new one and be all healthy again.  If however a second drive fails before it has rebuilt you will lose the lot.

With drives getting rather large, the rebuild times can be quite long so using RAID-6 or RAID-10 is more preferable, but you need units with 6 drive bays to make that economical (RAID-6 takes 2 drives for parity information, and RAID-10 will take half of your drives for protection).

Regards!




1086 posts

Uber Geek
+1 received by user: 44

Subscriber

  Reply # 789757 30-Mar-2013 21:21 Send private message

Mark:
Gilco2: ....  Obviously I would want raid 1 I think it is where it mirrors 1 drive to the other.  Therefore I was thinking of a 4 bay unit.  How does it work. Does it use the first pair then switch to next pair as the first ones fill up.  I dont want it all as one big drive as I want the protection of a mirrored drive if one fails ....
Thanks


No it won't work that way .. but there is nothing stopping you having two RAID-1 sets running (so long as the NAS is semi decent and supports it), you will have 2 filesystems though.  Or you can go RAID-10 which will take all 4 and give you 2 drives worth of capacity.

If you have a 4 drive unit the most economical configuration is to go RAID-5, it will give you 3 drives worth of capacity (1 drives worth of capacity gets used for parity) and be able to withstand the failure of any 1 of the 4 drives and keep on working (although a bit slower as it does the XOR calculations on the fly) ... as soon as you replace the dead drive it will rebuild the data onto the new one and be all healthy again.  If however a second drive fails before it has rebuilt you will lose the lot.

With drives getting rather large, the rebuild times can be quite long so using RAID-6 or RAID-10 is more preferable, but you need units with 6 drive bays to make that economical (RAID-6 takes 2 drives for parity information, and RAID-10 will take half of your drives for protection).

Regards!
okay thanks, I will go raid 5 then.  All new to me.  I just found the benefits of have a centralised system. At present I will still have the present external drives as backups as cant rely entirely on a NAS.  Once I have sorted this part and get to grips with it then later I can go down the road of more drives and RAID-10.  Thanks for the help




HTPC AMD A4-5300 cpu, Gigabyte ga2fa75m-d3h motherboard, , 4GB DDR3 ram, onboard  graphics. Hauppuage HVR 3300 tuner,  Antec 2480B case, Windows 7 home premium 64 bit using media center

803 posts

Ultimate Geek
+1 received by user: 115


  Reply # 789764 30-Mar-2013 21:36 Send private message

Gilco2:  At present I will still have the present external drives as backups as cant rely entirely on a NAS.  Once I have sorted this part and get to grips with it then later I can go down the road of more drives and RAID-10.  Thanks for the help


Yup, just remember RAID is not a backup .. it's just redundancy, so having a good backup regime in place is good practice :-)  So backing up your NAS to external drives is good, then take those drives off site (in case something bad happens to your house/office), and it never hurts to have your really important stuff backed up to one of the cloud backup services (I use Mozy, but there are loads of others)




23 posts

Geek
+1 received by user: 4


  Reply # 793165 4-Apr-2013 13:34 Send private message

I'm usinga Synology DS413(4bay) with all green drives in a SHR(synolgoy hybrid raid?). It is excellent, good for streaming, I can stream to my PC, two tv's and a raspberry pi all at the same time without issues.

I'm curious as to why green drives aren't recommended, i've had one drive fail(a green) and put in a new one, away it went and rebuilt array with out issues

803 posts

Ultimate Geek
+1 received by user: 115


  Reply # 793232 4-Apr-2013 14:31 Send private message

I believe it is around how the drives handle media errors, and how they respond back to the drive controller/host when they are dealing with an error.
I remember reading that the green drives spend more time re-reading a bad area of disk before declaring it "dead" than a RAID controller (be it hardware or software) is prepared to wait for ... so a green drive might spend 5 seconds (made up number) faffing about trying to work out if an area of disk is dead or not, in that 5 second the RAID controller will panic and think the drive is no longer talking and declare the whole drive dead ... where as a drive setup for a RAID environment might only spend 1 second working out if an area of disk is dead (and probably reports back to the RAID controller to say it is actually doing that so the controller knows to wait itself)

Or something along those lines :-)

I run 4 * 2TB WD EARS "green" drives in my Thecus .. I think it's a case of "your mileage may vary" :-)




1 | 2 | 3 | 4 
View this topic in a long page with up to 500 replies per page Create new topic




Twitter »
Follow us to receive Twitter updates when new discussions are posted in our forums:



Follow us to receive Twitter updates when news items and blogs are posted in our frontpage:



Follow us to receive Twitter updates when tech item prices are listed in our price comparison site:




News »

Trending now »
Hot discussions in our forums right now:

MH 17 "shot down" all dead
Created by joker97, last reply by turnin on 22-Jul-2014 16:56 (196 replies)
Pages... 12 13 14


PB Computers experiences
Created by KiwiNZ, last reply by paulmilbank on 23-Jul-2014 11:32 (20 replies)
Pages... 2


Huge Fuss, didn't even make it a year.
Created by networkn, last reply by Glassboy on 22-Jul-2014 19:50 (121 replies)
Pages... 7 8 9


Skinny's new aggressive ad campaign
Created by Yabanize, last reply by Yabanize on 22-Jul-2014 23:35 (52 replies)
Pages... 2 3 4


Insulation - good deals?
Created by Fred99, last reply by Handle9 on 19-Jul-2014 18:08 (15 replies)

Telecom and temporarily moving
Created by Tel69, last reply by NonprayingMantis on 19-Jul-2014 21:34 (12 replies)

Cunliffe on Holiday
Created by networkn, last reply by trig42 on 23-Jul-2014 09:02 (34 replies)
Pages... 2 3


Those were the days......Xtra Jetstream plans 10 yrs ago
Created by clinty, last reply by tdgeek on 23-Jul-2014 11:43 (31 replies)
Pages... 2 3



Geekzone Live »
Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.

Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.