Currently i have a single 10TB hdd in stripe. The plan is to expand and extend the Pool. Here is how i thought i might do it. I just want to know if ist possible.
1)Add another 10TB hdd, and selecting Mirror, now 10Tb+10Tb in mirror, i have still 10TB of space, but with redundancy
2)Add another 10TB hdd, 10Tb+10Tb+10Tb, still mirror, one redundancy, 20TB of space
3)Add another 10TB hdd, 10Tb+10Tb+10Tb+10Tb, still mirror, one redundancy, 30TB of space
4)Taking out one 10TB and replacing it with a 20TB hdd, Array is rebuilded, still 30TB of space, becuase the extra space is lost.
5)Take out and replace all 10TB hdd with 20 TB hdd, one still serves as mirror, but now since all hdd are the same 20TB size, the Array size can be 60TB instead of the original 30TB.
Is this reasoninig correct ? Is this possible. Or in order to extend my Pool without having to backup data, is something that cant really be done ?
Becuase it is easy to back up whole 30 TB to a single hdd, and then create a new pool from 30TB hdd and copy the backup to the new pool.
Or are there any other strategies, for expanding a pool without having the Need to backup the Information that it contains ?
1)Add another 10TB hdd, and selecting Mirror, now 10Tb+10Tb in mirror, i have still 10TB of space, but with redundancy
2)Add another 10TB hdd, 10Tb+10Tb+10Tb, still mirror, one redundancy, 20TB of space
3)Add another 10TB hdd, 10Tb+10Tb+10Tb+10Tb, still mirror, one redundancy, 30TB of space
4)Taking out one 10TB and replacing it with a 20TB hdd, Array is rebuilded, still 30TB of space, becuase the extra space is lost.
5)Take out and replace all 10TB hdd with 20 TB hdd, one still serves as mirror, but now since all hdd are the same 20TB size, the Array size can be 60TB instead of the original 30TB.
Is this reasoninig correct ? Is this possible. Or in order to extend my Pool without having to backup data, is something that cant really be done ?
Becuase it is easy to back up whole 30 TB to a single hdd, and then create a new pool from 30TB hdd and copy the backup to the new pool.
Or are there any other strategies, for expanding a pool without having the Need to backup the Information that it contains ?