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Tag: PPR

Intel Post Package Repair (PPR) uses additional spare capacity within the DDR4 DRAM to remap and replace faulty cell areas detected during system boot time. Remapping is permanent and persists through power-down and reboot.
Newer memories, such as double data ram version 4 (DDR4) include so-called post-package repair (PPR) capabilities. PPR capabilities enable a compatible memory controller to remap accesses from a faulty row of a memory module to a spare row of the memory module that is not faulty.
- Hard-PPR permanently remaps accesses from a designated faulty row to a designated spare row. A Hard-PPR row remapping survives power cycles.
- Soft-PPR remapping temporarily maps accesses from a faulty row to a designated spare row. A Soft-PPR row remapping will survive a “warm” reboot,but does not survive a powercycle.
You can enabled it in BIOS policy / Memory RAS configuration – Select PPR type configuration – Hard PPR

UCS Nov 30, 2023

Cisco UCS Manager Plugin for vSphere: Remote Plugin 4.0(0) and 4.0(1) for vCenter 8.0 U2, 8.0 U3 and 9.0

Cisco UCS Manager remote plugin for the vSphere HTML client: 4.0(0) vs 4.0(1), supported vCenter 7.0 U1 to 9.0, appliance sizing, install and Proactive HA.

3 min read

UCS Nov 23, 2023

Add F1705 Alert to Cisco UCS Manager Plugin 4.0(0)

Add Cisco UCS fault F1705 (Rank VLS) as a custom fault in the UCS Manager Plugin 4.0(0) for the vSphere HTML client, so Proactive HA can react to it.

1 min read

UCS Oct 31, 2022

Field Notice: FN – 72368 – Some DIMMs Might Fail Prematurely Due to a Manufacturing Deviation – Hardware Upgrade Available

Cisco Field Notice FN-72368: some DIMMs might fail prematurely due to a manufacturing deviation. What's affected, and why ADDDC and PPR help.

2 min read

UCS Dec 21, 2021

Add F1705 Alert to Cisco UCS Manager Plugin

Add Cisco UCS fault F1705 (Rank VLS) as a custom fault in UCS Manager Plugin 3.0(6) for the vSphere HTML client, for Proactive HA.

1 min read

UCS Oct 16, 2021

ADDDC Sparing and PPR on Cisco UCS M5: BIOS Tokens, Field Notice FN-70432 and Recommended Firmware

ADDDC Sparing and PPR on Cisco UCS M5: how they work, the Memory RAS and PPR Type BIOS tokens, FN-70432 firmware, and handling F1705/F1706 events.

5 min read

UCS May 6, 2020

ADDDC Virtual Lockstep Hang on Cisco UCS M5 (CSCvr79388, SKX108): Fixed in UCSM 4.1(1c), C480 M5 in 4.1(1d)

UCS M5 servers could hang and reboot (#IERR, M2M timeout) once ADDDC virtual lockstep kicked in. The Cisco bugs, fixed releases and what to run now.

4 min read

UCS Mar 3, 2020

Proactive HA is working in VCSA 6.7 with Cisco UCS Manager Plugin for VMware vSphere HTML Client (beta Version 3.0(2))

Proactive HA working on vCenter 6.7 with the Cisco UCS Manager Plugin 3.0(2) beta for the vSphere HTML client, tested on 9 clusters and 290 hosts.

2 min read