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Should I Move Away From 3TB Drives?

Hard disks, HDD, RAID Hardware, disk controllers, SATA, PATA, SCSI, IDE, On Board, USB, Firewire, CF (Compact Flash)
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Should I Move Away From 3TB Drives?


Post by chipmunkofdoom2 » 11 Jul 2019 17:09

Hi all, I'm looking for some opinions on disk sizes. I currently have 6x3TB drives in 3 separate mirrors, configured as two pools (configuration at the end of this post). I just replaced a failed disk yesterday and it got me thinking about the size of disks I'd choose in the future. I've also been thinking about capacity, because I'm out of drive bays. If I need more storage, I'd be retiring good 3TB disks which I hate doing (the disk that failed yesterday was in service since 2014, while the last one that failed was in service from 2012 to 2017). Or buying a new case.

On the one hand, I like the idea of upgrading to 6TB or 10TB drives in the future. I like having one or two big mirrors and I like the flexibility of only having one mirror per pool. I need to combine two 3TB mirrors in one pool to store all my media in one location. I can also get away with using fewer drives if I move away from 3TB disks: all my files will fit comfortably on pool consisting of a single 10TB mirror, and the server will use less power overall with fewer drives. The downside is that 6TB - 10TB drives are more expensive to replace, even if they're cheaper per GB.

On the other hand, I like the relative cost effectiveness of 3TB drives. They're cheap and available, and I feel comfortable using factory refurbished/recertified drives, which saves even more money. The downside is for large collections like my media, I have to use a two-mirror pool to store it all in one pool. This isn't a problem necessarily, except that I'm stuck with a four disk pool. I have to upgrade my other pool to be large enough to store everything before I can destroy the four-disk pool and reconfigure it or retire disks.

So, if you had a configuration like mine, what would you do the next time a disk fails? Would you continue using 3TB drives? Or would you replace the failed disk with something larger?

Thanks for any thoughts or opinions!

Code: Select all

  pool: pool01
 state: ONLINE
  scan: scrub in progress since Thu Jul 11 06:56:09 2019
        1.76T scanned out of 3.66T at 139M/s, 3h58m to go
        0 repaired, 48.09% done

	pool01        ONLINE       0     0     0
	  mirror-0    ONLINE       0     0     0
	    ada0      ONLINE       0     0     0
	    ada1      ONLINE       0     0     0
	  mirror-1    ONLINE       0     0     0
	    ada2      ONLINE       0     0     0
	    ada3      ONLINE       0     0     0

errors: No known data errors

  pool: pool02
 state: ONLINE
  scan: scrub repaired 0 in 7h21m with 0 errors on Mon Jul  1 07:21:12 2019

	pool02      ONLINE       0     0     0
	  mirror-0  ONLINE       0     0     0
	    ada4    ONLINE       0     0     0
	    ada5    ONLINE       0     0     0

errors: No known data errors

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Re: Should I Move Away From 3TB Drives?


Post by raulfg3 » 12 Jul 2019 00:53

I change to 10TB and finally change last working 3TB to Grow my pool,

So YES , please consider to buy big disk until finally you need to grow your pool. (revision 6766)+OBI on SUPERMICRO X8SIL-F 8GB of ECC RAM, 12x3TB disk in 3 vdev in RaidZ1 = 32TB Raw size only 22TB usable

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Re: Should I Move Away From 3TB Drives?


Post by Lee Sharp » 28 Jul 2019 01:36

I just recently replaced my drives, but when I did I felt that my server was a bit long in the tooth as well. This allowed me to do a bench copy from old to new and retire. And I used the drives that were the best price for gig which was 3tb. But I have 8 in raidz2. :)

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