Thursday, October 11, 2018

VMware ESXi SCSI Sense Code Decoder

SCSI errors or warnings in ESXi are displayed with 6 status codes. This page converts these sense codes from ESXi Hosts to human readable status information. In the vmkernel.log system log file from an ESXi 5.x or 6.0 hosts, you see entries similar to the following.

ScsiDeviceIO: [...] Cmd 0x1a [...] to dev "naa.x" failed H:0x0 D:0x2 P:0x0 Valid sense data: 0x5 0x24 0x0.

Monday, August 20, 2018


The wonderful security updates in Firefox (and Chrome) will give you the dreaded SSL_ERROR_BAD_MAC_ALERT. So no more ILO for you 
How to mitigate that?, well first do as told in the article above, go to about:config in firefox and set the security.tls.version.fallback-limit to 1.
How you can access the ILO and update the firmware to 2.29 for ILO2 (or higher), as instructed here, you can fetch the ILO2 firmware  Here
HP has a habit of only updating the Windoze firmware binaries, forgetting that most of the internet runs on Linux, but anyway just download the EXE and extract the ilo229.bin from the file.
If you don’t like the clickerdyclick web interface, or have more than 2 servers to update, it makes sense to put your binary on some web server  in your environment and just ssh into your ILO and update from there, the magic is done like so:
load -source /map1/firmware1
(…. is our internal web server of course, replace with your own)
O and don’t forget to set your FireFox security.tls.version.fallback-limit back to 3

How to use DiskSpd to simulate Veeam Backup & Replication disk actions

This HOW-TO contains information on how to use Microsoft© DiskSpd to simulate Veeam Backup & Replication disk actions to measure disk pe...