Author Topic: Upgrade a single drive in a RAID5 array (TS-XE8.0TL/R5)  (Read 2356 times)

mh1983

  • Tatanka
  • **
  • Posts: 50
Upgrade a single drive in a RAID5 array (TS-XE8.0TL/R5)
« on: July 01, 2018, 02:13:24 PM »
One more TS-XE8.0TL/R5 question for today: are there any best practices for upgrade a single drive when all the drives are working? Most Google results show how to replace a defective drive, but I want to know how to safely do an upgrade when all existing drives are working. Can anyone help me with the sequence or point me to a forum post/KB article/video? Thanks!

oxygen8

  • The Oxy-genuine article
  • El Toro
  • ****
  • Posts: 417
  • Giving you some breathing space.
Re: Upgrade a single drive in a RAID5 array (TS-XE8.0TL/R5)
« Reply #1 on: July 01, 2018, 02:32:09 PM »
remove one drive with the webif
after success remove the

mh1983

  • Tatanka
  • **
  • Posts: 50
Re: Upgrade a single drive in a RAID5 array (TS-XE8.0TL/R5)
« Reply #2 on: July 01, 2018, 05:10:34 PM »
Thanks for your reply, but I don't understand. Looks like it was incomplete or truncated. Could you clarify, please? Thx!

oxygen8

  • The Oxy-genuine article
  • El Toro
  • ****
  • Posts: 417
  • Giving you some breathing space.
Re: Upgrade a single drive in a RAID5 array (TS-XE8.0TL/R5)
« Reply #3 on: July 02, 2018, 12:21:05 AM »
i have no terastation

on my linkstation:

webif
drives
mark the drive to remove
click remove
wait

after finish you can remove the hardware

mh1983

  • Tatanka
  • **
  • Posts: 50
Re: Upgrade a single drive in a RAID5 array (TS-XE8.0TL/R5)
« Reply #4 on: July 02, 2018, 10:18:15 AM »
OK, thanks for pointing me to the setting in the web UI.

That process should keep the data and the RAID array intact while I swap one drive for another?

oxygen8

  • The Oxy-genuine article
  • El Toro
  • ****
  • Posts: 417
  • Giving you some breathing space.
Re: Upgrade a single drive in a RAID5 array (TS-XE8.0TL/R5)
« Reply #5 on: July 02, 2018, 10:42:59 AM »
yes
but
one error is enought to kill all data

do not do this without backup


and it takes much time
the raid will be rebuild after changing one drive
this can take many days

Texturtle

  • Administrator
  • *****
  • Posts: 893
  • RAID is NOT a substitute for a good backup
Re: Upgrade a single drive in a RAID5 array (TS-XE8.0TL/R5)
« Reply #6 on: July 02, 2018, 10:47:54 AM »
Keep in mind that this WILL NOT increase the space on the array. RAID 5 creates a parity stripe across all drives, it must use the same amount of space on each drive. If you put in a larger drive the extra space will not be usable.

mh1983

  • Tatanka
  • **
  • Posts: 50
Re: Upgrade a single drive in a RAID5 array (TS-XE8.0TL/R5)
« Reply #7 on: July 02, 2018, 11:00:25 AM »
Good info, thank you both.

So, if i want to increase the space, I should do the following?

1. Back up/copy off all data from the drives.
2. Remove the array.
3. Rip and replace drives.
4. Recreate the array.
5. Copy the data back to the new drives.



Texturtle

  • Administrator
  • *****
  • Posts: 893
  • RAID is NOT a substitute for a good backup
Re: Upgrade a single drive in a RAID5 array (TS-XE8.0TL/R5)
« Reply #8 on: July 02, 2018, 11:12:11 AM »
Yes, generally, except after you delete the array you should replace the drives one at a time and format each new drive after installing it. The OS is installed on the drives, so if you remove them all the unit won't boot. Formatting the drive puts the OS on it.

Once all 4 new drives are in and formatted you should be able to create a new RAID 5.

mh1983

  • Tatanka
  • **
  • Posts: 50
Re: Upgrade a single drive in a RAID5 array (TS-XE8.0TL/R5)
« Reply #9 on: July 02, 2018, 12:08:53 PM »
Really appreciate this -- thank you! You no doubt saved me a future headache. :)

mh1983

  • Tatanka
  • **
  • Posts: 50
Re: Upgrade a single drive in a RAID5 array (TS-XE8.0TL/R5)
« Reply #10 on: July 02, 2018, 12:50:13 PM »
What's the max storage could I do with a RAID 5 array? 4 x 2 TB drives being the officially supported upper limit for HDDs, I believe.

mh1983

  • Tatanka
  • **
  • Posts: 50
Re: Upgrade a single drive in a RAID5 array (TS-XE8.0TL/R5)
« Reply #11 on: August 29, 2018, 09:34:58 AM »
Texturtle, I just wanted to say I followed your suggested process yesterday and it worked like a charm. Overnight, the raid array was built/checked successfully, so I'm and running again with almost 3 gigs/redundancy. Thank you so much!

Texturtle

  • Administrator
  • *****
  • Posts: 893
  • RAID is NOT a substitute for a good backup
Re: Upgrade a single drive in a RAID5 array (TS-XE8.0TL/R5)
« Reply #12 on: August 29, 2018, 09:45:28 AM »
Glad I could be of assistance!