Syneto Syneto
Quick Start Guide · 2026

SyFS Storage Pool Management.

Create, grow, mirror, scrub and replace devices in a SyFS pool — without taking the appliance offline. The day-2 storage operations runbook.

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SYNETO  |  GUIDE-STORAGE-POOL-MANAGEMENT  |  QUICK START GUIDE v1.0 EN-IT-ES
Quick Start Guide02
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About this document

Publisher

Syneto SpA

Via Cefalonia 70, Brescia 25124, Italy

VAT RO15999720 · REG J35/2971/2003

Contact: [email protected]

Phone: +39 051 095 3000

Web: https://syneto.eu

Offices

Italy (HQ) · Brescia

Romania · Timișoara

Spain · Madrid

Certifications

ISO 9001 — Quality Management

ISO/IEC 27001 — Information Security

Copyright & trademarks

© 2026 Syneto SpA. All rights reserved. "Syneto", the Syneto logo, "SynetoOS", "Syneto CENTRAL", "Hyperion", "HYPER Core", "HYPER Edge", and "HYPER Echo" are trademarks of Syneto SpA. All other trademarks are the property of their respective owners.

Document scope

Day-2 guide: pool layout decisions, adding capacity, scheduling scrubs, hot-swap of failed drives, encryption configuration, pool import/export, CLI examples for every operation.

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Layouts03
Chapter 01 · Layouts

Pick the right layout up front.

Mirror (n × 2)
  • Best read latency
  • 50% capacity overhead
  • Recommended for Tier-1 OLTP / DB
  • Survives 1 drive failure per mirror
RAID-Z2
  • Two-drive parity
  • ~80% usable capacity
  • Survives 2 simultaneous drive failures
  • Default for general workloads
RAID-Z3 / Mixed
  • Three-drive parity (Z3) for wide vdevs
  • ~70% usable on Z3
  • Mixed: SSD mirror hot + RAID-Z2 cold
  • SyFS auto-tiers via ARC + L2ARC
Layout is hard to change later

You can ADD vdevs to a pool at any time. You CANNOT change the topology of an existing vdev. Plan ahead — or migrate via Recovery Point clone if you must.

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Capacity04
Chapter 02 · Capacity

Adding capacity to a pool.

01

Insert drives

New drives go into empty bays. SynetoOS auto-detects within seconds.

02

Storage UI

Storage → Pools → "Add vdev". Choose layout matching existing vdevs.

03

Confirm

Capacity is available immediately. Recovery Points and existing data are untouched.

04

Rebalance

SyFS rebalances new writes across all vdevs automatically. No manual balancing.

CLI alternative
# List drives detected by SynetoOS
syctl drives discover --unassigned
# Add an 8-drive RAID-Z2 vdev to hyper-prod pool
syctl pool add-vdev hyper-prod \
--layout raidz2 \
--drives nvme3n1,nvme3n2,nvme3n3,nvme3n4, \
nvme3n5,nvme3n6,nvme3n7,nvme3n8
✓ vdev added · hyper-prod usable +28.4 TB
✓ Rebalance scheduled (background, low priority)
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Health05
Chapter 03 · Health

Scrubs and drive replacement.

Weekly scrub Scheduled, low IO prio Read every block Verify checksum Match → pass Mismatch → self-heal Rewrite from redundant copy Failed drive? SMART or repeated bad Hot-swap + resilver Pool stays online
Weekly scrub reads every block, self-heals mismatches, escalates persistent bad blocks to drive replacement.
Drive replacement workflow
# Identify the failed drive
syctl pool status hyper-prod
vdev nvme2 · DEGRADED
nvme2n3 · FAILED · serial XYZ123
# Hot-swap the physical drive (chassis bay 7)
# Then run replace — SynetoOS auto-detects the new drive
syctl pool replace hyper-prod \
--old nvme2n3 \
--new nvme2n3 \
--priority low
✓ Resilver started (background) — pool stays ONLINE
ETA: 3h12m · current IO impact: ~12%
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Live view06
Chapter 04 · Live view

Pool health at a glance.

SynetoOS · Pool · hyper-prod
OverviewDevicesScrubAlerts
ONLINE
State
180/240 TB
Usable
75%
Used %
7d
Scrub ETA
Vdev health
nvme0 · mirror (2)ONLINE
nvme1 · mirror (2)ONLINE
nvme2 · RAID-Z2 (8)RESILVERING · 3h12m
spare-1STANDBY
14:23INFOpool hyper-prod · resilver progress 88% (3.2 GB/s)
08:00OKWeekly scrub completed: 12 checksum errors corrected, 0 unrecoverable
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Support & contact07
Chapter 05 · Support & contact

About Syneto & next steps.

Syneto designs and manufactures the complete Hybrid Cloud Ecosystem — hypervisor, data management, data protection and disaster recovery in a single plug & play platform. Founded in 2008, headquartered in Brescia and Timișoara, serving 5,000+ European businesses.

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European engineering

Designed, built and supported in Europe. ISO 9001 and ISO/IEC 27001 certified operations.

Plug & play deployment

Production-ready in under 30 minutes. No multi-vendor integration, no professional services required.

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One contract, one phone number, one SLA — for the entire stack. Local language support.

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Across 18+ years of customer deployments, no Syneto customer has ever paid ransom following a cyber incident.

Single-vendor support — one contract, one phone number, one SLA for the entire stack. Three response tiers, all delivered by Syneto engineers in your language.

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SYNETO SPA · VAT RO15999720 · REG J35/2971/2003 · ISO 9001 · ISO/IEC 27001