Main » Forums home » Conventional hard drives

All times are UTC - 5 hours [ DST ]

Switch to mobile style


Post new topic Reply to topic  Page 1 of 1
  [ 6 posts ] 
  Previous topic | Next topic 
Author Message
hlhp_verehan
 Post subject: Can I create raid 5 staring with 2hdd?
PostPosted: October 8th, 2021, 7:57 
Offline

Joined: October 8th, 2021, 7:50
Posts: 2
Location: taiwan
From my understating, raid 5 allow 1 hdd failure.

If I have an old 8TB hdd, I want to increase volume without erase the data.

Can I get another 2 new 8TB hdd, then create raid 5 with 2 new hdd, than copy the data from my old hdd, finally erase the old hdd and add the old hdd to the raid 5?
Top
 Profile  
 
Arch Stanton
 Post subject: Re: Can I create raid 5 staring with 2hdd?
PostPosted: October 9th, 2021, 10:00 
Offline
User avatar

Joined: May 13th, 2019, 7:50
Posts: 721
Location: Nederland
Nope...

_________________
Joep
http://www.disktuna.com - video & photo repair & recovery service
Top
 Profile  
 
einstein9
 Post subject: Re: Can I create raid 5 staring with 2hdd?
PostPosted: October 10th, 2021, 3:30 
Offline
User avatar

Joined: May 13th, 2010, 11:17
Posts: 2776
Location: Kuwait
hlhp_verehan wrote:
From my understating, raid 5 allow 1 hdd failure.

If I have an old 8TB hdd, I want to increase volume without erase the data.

Can I get another 2 new 8TB hdd, then create raid 5 with 2 new hdd, than copy the data from my old hdd, finally erase the old hdd and add the old hdd to the raid 5?


Minimum 3 drives to create RAID5
but you can do RAID1 mirror with 2 drives

_________________
Kuwait Data Recovery - UNIX GTC
The only reason for time is so that everything doesn't happen at once. By: Albert Einstein
Top
 Profile  
 
fzabkar
 Post subject: Re: Can I create raid 5 staring with 2hdd?
PostPosted: October 10th, 2021, 5:04 
Offline
User avatar

Joined: September 8th, 2009, 18:21
Posts: 14945
Location: Australia
Create a virtual RAID 5 in DMDE using 2 physical drives and a NULL disk. Copy Sectors from the old 8TB drive to the virtual RAID. Then you will have a degraded RAID. I'm not sure how you would proceed from here, though.

_________________
A backup a day keeps DR away.
Top
 Profile  
 
hlhp_verehan
 Post subject: Re: Can I create raid 5 staring with 2hdd?
PostPosted: October 10th, 2021, 10:45 
Offline

Joined: October 8th, 2021, 7:50
Posts: 2
Location: taiwan
Thank you for the replies.
I am running out of space, so RAID1 is not my option.
After checking DMDE, it is a bit complicated, I afraid I messy up my data.
I think I just using Symbolic link to workaround for now.
Top
 Profile  
 
alpy
 Post subject: Re: Can I create raid 5 staring with 2hdd?
PostPosted: October 11th, 2021, 10:50 
Offline

Joined: October 9th, 2021, 9:56
Posts: 11
Location: Hungary
The same thing mentioned by @fzabkar can be done using mdadm under linux, if you are OK with software raid. But that will be way more complicated.
Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  Page 1 of 1
  [ 6 posts ] 

Main » Forums home » Conventional hard drives

All times are UTC - 5 hours [ DST ]

Who is online

Users browsing this forum: No registered users and 59 guests

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Switch to mobile style
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group