Cisco

Cisco UCS Blade Cannot Get IP Address for KVM

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You may see “The IP address to reach the server is not set” when clicking the KVM console in Cisco UCS Manager. The issue persists even Cisco UCS Manager has enough IP addresses for management. Re-acknowledge or reset CIMC cannot fix the problem. The fix procedure is go to “Equipment” -> Select the server -> … Read more

Memory Errors on Modern Servers

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I used to see memory degrading on  Cisco  UCS blades. But less see on HPE blades. I thought it maybe quality control problem of Cisco manufacture. Today I read two articles in Cisco website, it explains why we see memory degrading and how it works. I attached the articles below. Managing Correctable Memory Errors on … Read more

vRealize Operations Management Pack for Cisco UCS Review

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Cisco UCS blade system is the best blade system I used so far. Whatever the hardware, software or support is perfect. I recommend leverage the system for primary system of virtualization. UCS blade system architecture is different with HP. I feel it more likes a network system. Fabric Interconnect (FI) modules exchange data between uplinks and internal components. IOMs on each chassis controls data routing. Architecture is complicate, but it’s powerful to manage large datacenter. Talking about large datacenter, you may have hundred chassis or blades. Data goes through FIs, IOMs and blades, you could see issues on any layer. It’s hard to find out where exactly the problem is. UCS Manager provides statistics for ports just like how Cisco does on network switches. You can show statistics of a particular port. But it doesn’t tell you when and which layer it happened. I tested Cisco UCS adapter for vRealize Operation Manager before I reviewed NetApp adapter for vRealize Operation Manager. It’s developed by same company Blue Medora. I’d like to introduce few of this product, it’s just my personal review.

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PortChannel does not work on Cisco UCS Fabric Interconnect

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Whatever  you configure on MDS, whatever you configure on Cisco UCS FIs, whatever you do for port channel on both side, the Cisco UCS uplink ports always down with error message Initilize failed, or Error disabled. Congratulation! your device hit MDS firmware bug…https://tools.cisco.com/bugsearch/bug/CSCtr01652/?reffering_site=dumpcr.