Known issues, environmental and system requirements, and installation or update considerations that are associated with these patch releases are the same as the parent release. For more information, see the Dell PowerProtect Data Domain 8.6 Combined Release Notes (Requires Dell Online Support login).
Release Revision History
| Release |
Description |
| 8.6.1.30 |
- Initial release of 8.6.1.30 (September 2026)
|
| 8.6.1.25 |
- Initial release of 8.6.1.25 (August 2026)
|
| 8.6.1.20 |
- Initial release of 8.6.1.20 (June 2026)
|
| 8.6.1.10 |
- Initial release of 8.6.1.10 (April 2026)
|
Associated Build Versions
- DDOS Build: 8.6.1.30
- DDVE Build: 8.6.1.30
- DDMC Build: 8.6.1.30
- BoostFS Build: 8.6.1.30
- OST Build: 8.6.1.30
DDOS Cloud
| Fixed Issue |
Description |
| DDOSCFD-32842 |
Fixed an issue where restore operations using NetWorker for SAP MaxDB and HANA backups stored on DDVE in ATOS AWS experienced significantly poor throughput. |
PDD09I-1963
|
Fixed an issue where Data Domain High Availability (DDHA) systems were unable to integrate successfully with Dell AIOps. |
DDOS File System
| Fixed Issue |
Description |
| DDOSCFD-27907 |
Fixed an issue where searching a LNS full key with a CHILDID greater than 4 billion in a LNS upgraded btree on an old format Interior (INT) page caused a system PANIC. |
DDOSCFD-28990
|
Fixed an issue where the B-Tree implementation inconsistently handled empty pages across intermediate page levels, leading to a keyspace gap between intermediate pages (INT2, INT3). |
DDOSCFD-31088
|
Fixed an issue where DS60 LCCs retained an outdated Init String image despite having up-to-date expander firmware and FPGA images. |
| DDOSCFD-31193 |
Fixed an issue where importing an HTTPS certificate via a PKCS12 file with a password different from the system passphrase resulted in the imported certificate not being applied to Apache. |
DDOSCFD-31854
|
Fixed an issue where DP4400 DDVE was going down repeatedly. |
DDOSCFD-31956
|
Fixed an issue where the alert "EVT-ICD-00001: Coredump analysis settings may have changed during upgrade" was consistently generated after every Data Domain upgrade. |
DDOSCFD-32459
|
Fixed an issue where running the sfs_dump -i command on a CyberSense or Cyber Recovery system caused a DDFS panic, resulting in an unexpected system restart. |
DDOSCFD-32986
|
Fixed an issue where SNMP queries from Avamar to a Data Domain system were intermittent, with disk-related queries taking longer than 30 seconds to respond. |
DDOSCFD-33148
|
Fixed an issue where after upgrading DDMC to version 8.6.1.20, navigating to the Ethernet section for Data Domain systems running DDOS 7.13 displayed the error: "(TypeError): Cannot read properties of null (reading 'a')." |
PDD05D-1112
|
Fixed an issue where Active Directory (AD) users were unable to log in to the Data Domain system in a multi-domain forest environment when the Global Catalog (GC) was hosted on a child domain. |
DDOS Network
| Fixed Issue |
Description |
| DDOSCFD-31932 |
Fixed an issue where users were unable to enable a network interface due to the error: "FEC setting off is not allowed." |
PDD09I-2006
|
Fixed an issue on DD3300 where the filesystem went down due to the /ddr/ext partition becoming full. |
DDOS Platform
| Fixed Issue |
Description |
| DDOSCFD-32306 |
Fixed an issue where upgrading DDOS from version 8.6.1.10 to 8.6.1.20 on the DD3300 platform failed with the error: "System upgrade failure: An internal error occurred." |
8.6.1.25 Release (August 2026)
Associated Build Versions
- DDOS Build: 8.6.1.25-1260668
- DDVE Build: 8.6.1.25-1260668
- DDMC Build: 8.6.1.25-1260668
- BoostFS Build: 8.6.1.20-1247088
- OST Build: 8.6.1.20-1246153
DDOS Platform
| Fixed Issue |
Description |
| DDOSCFD-32306 |
Fixed an issue where upgrading DDOS from version 8.6.1.10 to 8.6.1.20 on the DD3300 platform failed with the error: "System upgrade failure: An internal error occurred." The upgrade now completes successfully without interruption. |
8.6.1.20 Release (June 2026)
Associated Build Versions
- DDOS Build: 8.6.1.20-1246795
- DDVE Build: 8.6.1.20-1246795
- DDMC Build: 8.6.1.20-1246795
- BoostFS Build: 8.6.1.20-1247088
- OST Build: 8.6.1.20-1246153
DDOS Cloud
| Fixed Issue |
Description |
| DDOSCFD-30100 |
Fixed an issue where the filesystem detected missing cloud data and reported a cloud corruption alert. |
DDOS File System
| Fixed Issue |
Description |
| DDOSCFD-30310 |
Fixed an issue causing the filesystem to restart with a PANIC due to extreme high read counts on the Data Domain. |
| PDD09I-1255 |
Fixed an issue where the clock moved backwards and caused FS to go offline due to a manual NTP sync. |
DDOS General
| Fixed Issue |
Description |
| DDOSCFD-28221 |
Fixed an issue where upgrading the DDOS caused SupportAssist to be removed from the configuration and could not be reconfigured later. |
| PDD09I-1247 |
Fixed an issue where SupportAssist failed during upgrades from ConnectEMC. |
| PDD09I-1301 |
Fixed an issue where the SupportAssist configuration disabled the second gateway after the OS upgrade. |
DDOS Network
| Fixed Issue |
Description |
| DDOSCFD-30211 |
Fixed an issue causing the DM5510 installation to fail with error code CONN0064 during the configuration phase. |
| PDD05D-1045 |
Fixed an issue where intermittent access problems caused CIFS and NFS shares and services on the DD to crash. |
| PDD09I-1252 |
Fixed an issue where contact details failed to send due to a delay in enabling connectivity in ESE. |
DDOS Platform
| Fixed Issue |
Description |
| DDOSCFD-30662 |
Fixed an issue where PEM was unresponsive to SMS queries. |
DDOS Security
| Fixed Issue |
Description |
| DDOSCFD-26997 |
Fixed an issue causing the filesystem to crash when doing the CR recovery. |
DDOS Storage
| Fixed Issue |
Description |
| DDOSCFD-30288 |
Fixed an issue causing a deadlock during management and I/O operations on the same diskgroup |
| DDOSCFD-30461 |
Fixed an issue causing a kernel panic due to an out-of-memory (OOM) crash |
8.6.1.10 Release (April 2026)
Associated Build Versions
- DDOS Build: 8.6.1.10-1226405
- DDVE Build: 8.6.1.10-1226405
- DDMC Build: 8.6.1.10-1226405
DDOS Cloud
| Fixed Issue |
Description |
| DDOSCFD-29408 |
Fixed an issue where a panic occurred when the max length verification failed. |
DDOS File System
| Fixed Issue |
Description |
| PDD14E-204 |
Fixed an issue with a write stream leak that occurred during attribute "btree" thrashing. |
DDOS General
| Fixed Issue |
Description |
| DDOSCFD-29639 |
Fixed an issue where the GUI encountered a TypeError when attempting to read a null property, causing an error. |
DDOS Platform
| Fixed Issue |
Description |
| DDOSCFD-29891 |
Fixed an issue where "net filter delete all" failed to remove custom rules after deleting default rules. |
| PDD09I-1227 |
Fixed an issue where false alerts were being generated about failed connectivity to the ESRS gateway when SupportAssist was configured. |
DDOS Replication
| Fixed Issue |
Description |
| DDOSCFD-27285 |
Fixed an issue where the destination DD returns failures during Guaranteed Replication. |
DDOS Security
| Fixed Issue |
Description |
| DDOSCFD-28978 |
Fixed an issue where the MFA troubleshooting user was unable to log in to the DD GUI due to insufficient privileges. |
DD Boost
| Fixed Issue |
Description |
| DDOSCFD-29073 |
Fixed an issue where the security clock drift exceeded the alert threshold. |
DDVE
| Fixed Issue |
Description |
| DDOSCFD-28546 |
Fixed object‑storage authorization failures caused by truncation of the Azure OAuth2.0 access token on Dell Data Domain Virtual Edition (DDVE) instances running in Azure. |