jamiejunk
Contributor
- Joined
- Jan 13, 2013
- Messages
- 134
So I have some systems with external JBODS that are getting pretty long in the tooth. I have the funds to replace a lot of these drives, but I’m wondering how other people would do it.
For example, I have a JBOD with fourteen 7200 RPM SAS drives in it. The pool has 7 VDEVS, using two drive mirrors.
The drives were manufactured in 2012, and have a powered on time of about 8.8 years. Maybe I don’t need to worry, but I have some budget now, and the age of these drives is starting to concern me.
Some Facts:
I DO have some other empty JBODs and SAS cables on hand.
I don’t need to expand the storage amount.
I’m happy with the performance.
My Options:
1) Purchase a set of replacement drives to have on hand (obviously I already have some spares) just wait for them to die, and replace them as I need.
2) Proactively replace the drives. Swapping out drives one at a time and letting the system re-silver until eventually all the drives are replaced.
3) Putting all the new drives in a secondary JBOD, and doing a ZFS send / receive to a new pool, then make that pool my primary and taking the old pool offline.
I’m currently running FreeNAS-11.3-U2.1. Historically, resilver tasks have taken a LONG time. But I thought I read somewhere (can’t find it now) that ZFS re silvering has been vastly improved. I could upgrade the system to TrueNAS-12.0-U3.1 if that would help.
So what would be your strategy?
For example, I have a JBOD with fourteen 7200 RPM SAS drives in it. The pool has 7 VDEVS, using two drive mirrors.
The drives were manufactured in 2012, and have a powered on time of about 8.8 years. Maybe I don’t need to worry, but I have some budget now, and the age of these drives is starting to concern me.
Some Facts:
I DO have some other empty JBODs and SAS cables on hand.
I don’t need to expand the storage amount.
I’m happy with the performance.
My Options:
1) Purchase a set of replacement drives to have on hand (obviously I already have some spares) just wait for them to die, and replace them as I need.
2) Proactively replace the drives. Swapping out drives one at a time and letting the system re-silver until eventually all the drives are replaced.
3) Putting all the new drives in a secondary JBOD, and doing a ZFS send / receive to a new pool, then make that pool my primary and taking the old pool offline.
I’m currently running FreeNAS-11.3-U2.1. Historically, resilver tasks have taken a LONG time. But I thought I read somewhere (can’t find it now) that ZFS re silvering has been vastly improved. I could upgrade the system to TrueNAS-12.0-U3.1 if that would help.
So what would be your strategy?