TrueNAS Open Storage Logo
TrueNAS.com Products Enterprise Support Community Support Truenas Security Get TrueNAS Enterprise Download TrueNAS Community Edition About TrueNAS Careers
TrueNAS Open Storage Logo
F-Series
F-Series

All-Flash NVMe Performance.

H-Series
H-Series

Big business performance. Entry level pricing.

Mini Series
Mini Series

Home Labs, Small Office & SMB Applications.

M-Series
M-Series

All-Flash or Hybrid Enterprise Performance.

R-Series
R-Series

Single Controller Storage Appliances.

TrueNAS Enterprise Icon
TrueNAS Enterprise

Mission Critical Storage. 24×7 Enterprise Support.

TrueCommand Icon
TrueCommand

Manage Your TrueNAS Fleet All From One Place.

Use Cases

Analytics Backup & Archival Cloud Data Mobility File Sharing
iX-Storj Media & Entertainment Surveillance Veeam Backup Virtualization

Industry

Audio Broadcasting Gaming Healthcare Manufacturing Media & Entertainment
Automotive Education Government MSP Research & AI

Support

Enterprise Support

For customers with active support contracts.

Community Support

For peer-to-peer, open-source support.

Resources

Case Studies Documentation Apps TrueNAS Security FAQ ZFS Overview
TrueNAS Blog Solution Guides Datasheets Software Status Videos TrueCommand Cloud
TrueNAS Community Edition Community Forum Discord TrueNAS GitHub TrueNAS Merch Store
About TrueNAS Awards Careers Contact Us Our Clients Reviews
Contact Icon
Contact an Enterprise Specialist

Speak with an enterprise storage specialist to find the right solutions for your business needs.

TrueNAS Enterprise Icon
TrueNAS Enterprise

Enterprise-grade storage appliances designed for business and mission-critical environments.

TrueNAS Community Edition Icon
Download TrueNAS Community Edition

Test Drive TrueNAS in Your Environment.

  1. TrueNAS 25.04 (Early)
  2. /
  3. TrueNAS Tutorials
  4. /
  5. Storage
  6. /
  7. Disks
  8. /
  9. SLOG Over-Provisioning
Edit page
TrueNAS TrueNAS Stable Version Documentation
This content follows TrueNAS 25.04 (Fangtooth) releases.
Use the Product and Version selectors above to view content specific to a different software release.

SLOG Over-Provisioning

  1 minute read.

TrueNAS Enterprise

Over-provisioning an SSD distributes the total number of writes and erases across more flash blocks on the drive. Seagate provides a thoughtful investigation into over-provisioning SSDs here: https://www.seagate.com/blog/ssd-over-provisioning-benefits-master-ti/.

For more general information on SLOG disks, see SLOG Devices.

Because this is a potentially disruptive procedure, contact TrueNAS Enterprise Support to review your overprovisioning needs and schedule a maintenance window.

Customers who purchase TrueNAS Enterprise hardware or that want additional support must have a support contract to use TrueNAS Enterprise Support Services. The TrueNAS Community forums provides free support for users without a TrueNAS Support contract.

TrueNAS Customer Support
Support Portalhttps://support.ixsystems.com
Emailsupport@ixsystems.com
Telephone and Other Resourceshttps://www.ixsystems.com/support/

Related Content

Tutorials
UI Reference

Have more questions?

For further discussion or assistance, see these resources:

Found content that needs an update?  You can suggest content changes directly! To request changes to this content, click the Feedback button located on the middle-right side of the page (might require disabling ad blocking plugins).