Any problem using different speed drives? How about memory?

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Any problem using different speed drives? How about memory?

Post by dpuett » Fri Jan 11, 2013 2:59 pm

I'm converting my two eSATA OWC Mercury QX2 arrays from hardware RAID 5 HFS+ to JBOD with ZFS. I'm in the process of moving all the data from the QX2's, converting them, and moving the data back. The drives in each of the QX2's are model & firmware matched. However, I'll have 3 2TB drives left over. These drives are different by different manufacturers and different speeds. Any problem with creating a ZFS pool from (3) 2TB drives of different manufacturers and speeds?

I also have a question about memory usage. If I convert the two RAIDS over to ZFS, I'll have 2 ZFS pools of 6 TB each. (4x2TB) I may be making a 6TB (3x2TB) pool as well. I have a i7 3GHz Mac Pro Hack with 16 GB of RAM. I can't increase the the RAM. Any memory problems with having 15TB total of ZFS storage?

Thank you for the help.
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Drives with different characteristics

Post by grahamperrin » Sun Jan 13, 2013 5:09 pm

At viewtopic.php?p=3227#p3227

At the moment I can't find the reference documentation that I want (AFAIR something about aiming for same sizes, with not too much attention to differences between other characteristics).


If I relocate that documentation, I'll post to the earlier topic.
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