UFS 1 SSD and 2 HDD setup

U

ufb19

Hi
I'm very new to FreeBSD and would like to get some advice

I have converted HP Prodesk 600 G1 into a backup server. I tried to use my new 2 x 12 TB HDD to make the installation but HP couldn't handle GPT and HDD over 2TB.
After some try I gave up and used an SSD to make the installation using the Guided Disk Setup

I could then add my 2 x 12 TB HDD into the zfs pool. Mirrored.
I have only 1 SSD and 2 HDD slots.
Code: 
gpart show -lp
=>       40  468862048    ada0  GPT  (224G)
         40       1024  ada0p1  (null)  (512K)
       1064  461372416  ada0p2  (null)  (220G)
  461373480    7488608  ada0p3  (null)  (3.6G)

=>         40  23437770672    ada1  GPT  (11T)
           40  23437770672  ada1p1  (null)  (11T)

=>         40  23437770672    ada2  GPT  (11T)
           40  23437770672  ada2p1  (null)  (11T)

zpool status
  pool: zfsdatapool
 state: ONLINE
  scan: none requested
config:

        NAME        STATE     READ WRITE CKSUM
        zfsdatapool  ONLINE       0     0     0
          mirror-0  ONLINE       0     0     0
            ada1p1  ONLINE       0     0     0
            ada2p1  ONLINE       0     0     0

errors: No known data errors

My questions:
1. The way I have used my single SSD and HDD pairs, is it reasonable?
2. If my SSD fails to boot for any reason, is there any possibilities to backup and restore it into new SSD/HDD. E.g. using my current zfsdatapool as backup dataset?
3. As I understand it, if any of my HDD crashes then I can add a new one to the current pool or I can move entire HDD to another server without a major issue, right?

Thanks.
 
1) Sure, why not. I doubt the HP can't handle GPT though, it certainly could have problems booting from those big disks.
2) Sure, that'll work. Instead of backing up you can just document and do a clean install with a new disk. More often than not a clean install is quicker than restoring a backup.
3) Yes.
 
ufb19 said:
Hi
I'm very new to FreeBSD and would like to get some advice

I have converted HP Prodesk 600 G1 into a backup server. I tried to use my new 2 x 12 TB HDD to make the installation but HP couldn't handle GPT and HDD over 2TB.
After some try I gave up and used an SSD to make the installation using the Guided Disk Setup

I could then add my 2 x 12 TB HDD into the zfs pool. Mirrored.
I have only 1 SSD and 2 HDD slots.
Code: 
gpart show -lp
=>       40  468862048    ada0  GPT  (224G)
         40       1024  ada0p1  (null)  (512K)
       1064  461372416  ada0p2  (null)  (220G)
  461373480    7488608  ada0p3  (null)  (3.6G)

=>         40  23437770672    ada1  GPT  (11T)
           40  23437770672  ada1p1  (null)  (11T)

=>         40  23437770672    ada2  GPT  (11T)
           40  23437770672  ada2p1  (null)  (11T)

zpool status
  pool: zfsdatapool
state: ONLINE
  scan: none requested
config:

        NAME        STATE     READ WRITE CKSUM
        zfsdatapool  ONLINE       0     0     0
          mirror-0  ONLINE       0     0     0
            ada1p1  ONLINE       0     0     0
            ada2p1  ONLINE       0     0     0

errors: No known data errors

My questions:
1. The way I have used my single SSD and HDD pairs, is it reasonable?
2. If my SSD fails to boot for any reason, is there any possibilities to backup and restore it into new SSD/HDD. E.g. using my current zfsdatapool as backup dataset?
3. As I understand it, if any of my HDD crashes then I can add a new one to the current pool or I can move entire HDD to another server without a major issue, right?

Thanks.
Click to expand...
You can use part of youd SSD as L2ARC cache. That improves the read speed significantly. The L2ARC needs not to be big.
 
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Reactions: a6h
SirDice said:
1) Sure, why not. I doubt the HP can't handle GPT though, it certainly could have problems booting from those big disks.
2) Sure, that'll work. Instead of backing up you can just document and do a clean install with a new disk. More often than not a clean install is quicker than restoring a backup.
3) Yes.
Click to expand...
OK thanks. I had issue like "gpt formatted disk legacy boot not supported" when I tried GPT but it could boot when I used MBR but in that case it was unclear to me if I just could use 2TB slice of available disk or if I could use most of the 12TB.
 
You might need to make sure you've got UEFI/EFI selected in all the right places in the BIOS settings for GPT to work - I think that is what the message means - you are trying to make a legacy BIOS GPT disk - you need to make sure you use UEFI everywhere.
 
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