● server4x 4TB Raw (16 TB) ➔ RAID5/Z1 = 12 TB • RAID6/Z2 = 8 TB
4x 4TB ZFS RAIDZ1 / RAIDZ2 & RAID 5 Usable Capacity Calculator
Calculate exact usable storage for 4x 4TB drives (16TB raw) in RAID 5 / RAIDZ1 (12 TB) and RAID 6 / RAIDZ2 (8 TB) on Proxmox VE.
⚡ Instant Calculated Answer
⚡Open Full Interactive Calculator (zfs-raid-calculator) →4x 4TB Raw (16 TB) ➔ RAID5/Z1 = 12 TB • RAID6/Z2 = 8 TB
📊Reference Table & Engineering Specs
| Parameter / Metric | Specification Value |
|---|---|
| Physical Disk Array | 4x 4 TB Enterprise SATA/NVMe (16 TB Raw) |
| RAID 5 / RAIDZ1 Usable | ~12.0 TB (Batas Aman ZFS 80%: ~8.7 TiB) |
| RAID 6 / RAIDZ2 Usable | ~8.0 TB (Tahan 2 Disk Rusak Bersamaan) |
| Recommended ZFS ARC RAM | Minimal 8 GB – 16 GB ECC RAM |
📖Technical Explanation & Methodology
With 4x 4 TB drives (16 TB raw), RAIDZ1/RAID 5 dedicates 1 drive to parity (12 TB usable), while RAIDZ2/RAID 6 dedicates 2 drives to dual parity (8 TB usable).
❓Frequently Asked Questions (FAQ)
What is the safe capacity limit for a Proxmox ZFS pool?
Keep ZFS pool utilization below 80% to prevent Copy-on-Write fragmentation slowdowns.
🔗Other Related Scenarios
/32 = Mask 255.255.255.255 • 1 Usable Hosts
/32 Subnet Mask (255.255.255.255): Usable Hosts (1), Wildcard & IPv4 Range
/29 = Mask 255.255.255.248 • 6 Usable Hosts
/29 Subnet Mask (255.255.255.248): Usable Hosts (6), Wildcard & IPv4 Range
/27 = Mask 255.255.255.224 • 30 Usable Hosts
/27 Subnet Mask (255.255.255.224): Usable Hosts (30), Wildcard & IPv4 Range
/26 = Mask 255.255.255.192 • 62 Usable Hosts
/26 Subnet Mask (255.255.255.192): Usable Hosts (62), Wildcard & IPv4 Range