freenasrast
Dabbler
- Joined
- Feb 12, 2013
- Messages
- 29
Consider:
Option 1
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ZPOOL[VDEV0(10 x 3TB ZFS+RAIDZ2)] = 24GB of usable storage requiring 30GB RAM since it's 1GB of RAM for each TB [10 x 3TB = 30TB]
Option 2
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ZPOOL[VDEV0(6 x 3TB ZFS+RAIDZ2) + VDEV1(6 x 3TB ZFS+RAIDZ2)] = 24 GB of usuable storage requiring 36 GB RAM since its 1GB RAM for each TB [2 x (6 x 3TB) = 36TB]
Q1/
Why would option 2 need that extra 6GB to produce the same amount of usable storage as option 1. Am I doing the math incorrectly?
Q2/
Option 2 somehow feels like the best way to go, but I am no expert. Which of the two options is the preferred option.
Thanks!
Option 1
--------
ZPOOL[VDEV0(10 x 3TB ZFS+RAIDZ2)] = 24GB of usable storage requiring 30GB RAM since it's 1GB of RAM for each TB [10 x 3TB = 30TB]
Option 2
--------
ZPOOL[VDEV0(6 x 3TB ZFS+RAIDZ2) + VDEV1(6 x 3TB ZFS+RAIDZ2)] = 24 GB of usuable storage requiring 36 GB RAM since its 1GB RAM for each TB [2 x (6 x 3TB) = 36TB]
Q1/
Why would option 2 need that extra 6GB to produce the same amount of usable storage as option 1. Am I doing the math incorrectly?
Q2/
Option 2 somehow feels like the best way to go, but I am no expert. Which of the two options is the preferred option.
Thanks!