Storage estimator

[CerealScaresMe]

If I understand correctly, part of the appeal of hexos is to suggest configurations based on what hardware you have. I'd like for there to be a online calculator or similar so I can see how many drives I should buy and at what capacity to reach my desired useable capacity using hexos's suggestions. I know there are already tools for this, but I don't know what to plug into the calculator, especially when we are talking about ZFS and not RAID.

[arvinpw]

on how usable capacity you can use, ZFS and RAID act like the same
HexOS default config is using RAIDz1, meaning you will sacrifice 1 drive in order to be able to still retain your data while 1 drive is failing

example, if you setup with four 2TB drives, the usable capacity is 3x2TB = 6TB
if you have eight 4TB drives, you can only use 7x4TB = 28TB

hope this clears you up.

[Mawson]

...And the same logic follows with RAIDz2 and RAIDz3. Those configurations dedicate two, and three, drives to parity/recoverability, respectively
 

Starting with 8x 10TB drives:

RAIDz1: 70TB, and 1 drive can fail without data loss

RAIDz2: 60TB, and 2 drives can fail without data loss

RAIDz3: 50TB, and 3 drives can fail without data loss

[CerealScaresMe]

On 12/7/2024 at 8:23 PM, arvinpw said:

on how usable capacity you can use, ZFS and RAID act like the same
HexOS default config is using RAIDz1, meaning you will sacrifice 1 drive in order to be able to still retain your data while 1 drive is failing

example, if you setup with four 2TB drives, the usable capacity is 3x2TB = 6TB
if you have eight 4TB drives, you can only use 7x4TB = 28TB

hope this clears you up.

 

21 hours ago, Mawson said:

...And the same logic follows with RAIDz2 and RAIDz3. Those configurations dedicate two, and three, drives to parity/recoverability, respectively
 

Starting with 8x 10TB drives:

RAIDz1: 70TB, and 1 drive can fail without data loss

RAIDz2: 60TB,  and 2 drives can fail without data loss

RAIDz3: 50TB, and 3 drives can fail without data loss

Thanks, this makes a ton of sense. I appreciate it.