Kuro Houou
Contributor
- Joined
- Jun 17, 2014
- Messages
- 193
Hi, today I have a 12 bay supermicro FreeNAS server, its been running for 3 great years with 6x8TB drives in a RAIDZ2 setup for a total of about 28TB of usable space. I have since gone over the 80% recommended storage utilization (I have 4.27TiB free now) and have purchased 6x14TB drives which in a RAIDZ2 setup should give ~50TB of usable space.
My question is, can I expand my existing Pool or because the drive sizes are different I should just create a new pool?
If I go into the console and walk through the Extend option (being careful not to accept that yet), adding my 6 drives, it says the following,
"Raid-z2
Estimated raw capacity: 50.93 TiB "
"Estimated data capacity available after extension.: 59.55 TiB " Am I missing something, is it not going to give me the full 50TB of usable disk space for the 6x14TB drives? I would have thought it would say something like 78TiB here.
Just curious what is going on here, is the extend option only good if you use the same size disks? If so, is my only option to create a new pool?
Third option might be to just scrap the idea of having 12 drives in this system and rebuilding the existing array one by one replacing the old drives with the 14TB drives, essentially just going from 28TB on this server to 50TB.... I have a backup FreeNAS box I could put the other drives in which actually might make more sense as it won't have enough space to provide a backup for 78TB lol... I'll think about this option more.. ignore this thought, back to the question at hand.. to extend or create a new pool :)
Thanks
My question is, can I expand my existing Pool or because the drive sizes are different I should just create a new pool?
If I go into the console and walk through the Extend option (being careful not to accept that yet), adding my 6 drives, it says the following,
"Raid-z2
Estimated raw capacity: 50.93 TiB "
"Estimated data capacity available after extension.: 59.55 TiB " Am I missing something, is it not going to give me the full 50TB of usable disk space for the 6x14TB drives? I would have thought it would say something like 78TiB here.
Just curious what is going on here, is the extend option only good if you use the same size disks? If so, is my only option to create a new pool?
Third option might be to just scrap the idea of having 12 drives in this system and rebuilding the existing array one by one replacing the old drives with the 14TB drives, essentially just going from 28TB on this server to 50TB.... I have a backup FreeNAS box I could put the other drives in which actually might make more sense as it won't have enough space to provide a backup for 78TB lol... I'll think about this option more.. ignore this thought, back to the question at hand.. to extend or create a new pool :)
Thanks
Last edited: