Skip to main content
NetApp Knowledge Base

How long does it approximately take for disk zeroing?

Last Updated:


Applies to

Disk Drives


Disk zeroing time varies according to the disk manufacturers; however, the following table is a guideline for the estimated disk zeroing time:

Estimated Disk Zeroing Time
 Capacity  Type RPM   Estimated Zeroing Time (hrs)
 100GB  SSD  -  0.1
 200GB  SSD  -  0.1
400GB SSD - 0.2
800GB SSD - 0.4
960GB SSD - 0.5
1.6TB SSD - 0.8
3.8TB SSD - 1.9
7.6TB SSD - 3.8
15.3TB SSD - 7.6
30.6TB SSD - 15.2
300GB FC 15k rpm 1.5
450GB 2.2
600GB 2.5
300GB SAS 15k rpm 1.5
450GB 2.2
600GB 2.5
450GB 10k rpm 2.3
600GB 2.6
900GB 2.9
1.2TB 3.2
1.8TB 3.8
500GB SATA/ NL-SAS 7.2k rpm 2.5
1TB 4.3
2TB 5.6
3TB 7.0
4TB 12
6TB 18
8TB 24
10TB 30

Note: These times are guidelines and will vary based on the load of the storage system.
The fast-zeroing was introduced in ONTAP 9.4.

Additional Information



NetApp provides no representations or warranties regarding the accuracy or reliability or serviceability of any information or recommendations provided in this publication or with respect to any results that may be obtained by the use of the information or observance of any recommendations provided herein. The information in this document is distributed AS IS and the use of this information or the implementation of any recommendations or techniques herein is a customer's responsibility and depends on the customer's ability to evaluate and integrate them into the customer's operational environment. This document and the information contained herein may be used solely in connection with the NetApp products discussed in this document.
Scan to view the article on your device