Cisco UCS FlexFlash Configuration of Secure Digital (SD) Card

 Cisco UCS FlexFlash /SDCard Configuration for Booting Server Operating System.

As most of the Cisco UCS users might be aware that Cisco has now add a lot of improvements and new features on the latest upgrade 2.2(1e).

One of the feature which we have started using is Cisco FlexFlash which is an SD Card. Its fully support if you buy the SD  Card from Cisco and we can even do mirroring on the Flash cards for redundancy, we will be installing ESXi Server 5.5 on these blades after mirroring them.

So where and How to install the Secure Digital (SD) Card  ?

If the CISCO UCS B200 Blade is in the Chassis you will need to power it off and slide it out just half way through and you should find the SD Card slot on the left


cisco ucs sdcard slot

for more information on how about this can be found on the following link

As you might be aware that CISCO UCS blade is just as equal to a brick and all the configuration is done on the logical server called Service profile. you will need to create a new  / clone an existing Service profile template and modify with the below changes which I have shown below on this post.

You will have to create a boot policy with CD Drive (legacy ) and SD Card and Some time you may end up getting this error ‘ advanced boot or secure boot configuration cannot be applied to the specified server There are not enough resources overall ‘ if you see it follow my blog post.

I have to make you aware that if you want to use SD card with Mirroring or RAID 1 you have to create the following new policies and create a Boot policy as mentioned above.

1. Disk policy with Mirror and any configuration

















2.   We have to create two Scrub policy under policy ( you can call it any thing you want which makes you understand what configuration you have selected)

  1. Flex Flash Scrub
  2. No Scrub

So where will you find the Flex Flash Controller?

Click on the Left pan on Equipment and Select the Chassis then the Server, on the right you will find the below details

click on Inventory and select the last tab which is Storage on the Storage tab you will find FlexFlash Controller

Note: this FlexFlash is only support if you are running 2.2 (d1) firmware.



Once you assign the new service profile policy, we will see the below error on the FlexFlaash Cards

EnablePaired Invalied Secondary


  1. Go to the service Profile and select the Policies and change the Scrub policy
  2.  in this create 2 policy the default is no scrub but you can create one called FlexFlash Scrub and the  other one No Scrub

To create the scrub policy click on Service profile of the server and click Policy > Scrub and click Create Scrub Policy

how to create scrub policy

  1. You will have to use the first policy for Flex flash Scrub which should have the below settings.

FlexFlash Scrub: should set to Yes











  1. You then need to create a new policy for No-Scrub as shown below :


After creating two policy this is the tricky bit to have the SD card as  Mirror you will need to do two reboots

first set the scrub policy to FlexFlash-Scrub ( note this will scrub the SD cards)  and click Save



Do the following steps:


  1. Go to the server and Click server Maintenance this will scrub the flash
  2. Reboot the server  in the following manor, go the the Equipment tab select the Chassis and the server Click on ‘Server Maintenance’ and click on ‘Re-acknowledge’ server




Acknowledge for Reboot


You will find the rediscovery


Once its configured go back to service profile

Go to > Polices

Select Scrub Policy and change it to No-Scrub from the drop down menue




which should look like below:


Change the scrub to No


5. Go to the server and Click server Maintenance this will Mirror and pair the SD card to Raid1/ Mirroring

6. Reboot the server  in the following manor, go the the Equipment tab select the Chassis and the server Click on ‘Server Maintenance’ and click on ‘Re-acknowledge’ server

Acknowledge for Reboot


After the server does the  rediscovery and boots successfully, You will see that this is successfully paired with is RAID 1 Mirroring.

Please note the Raid Status : Enabled Paired



Error message if the Raid is not working, this means you have to go through the process again. always make sure you only change the scrub policy on the specific server profile and not the service profile template as this will create problems on the working profiles.

EnablePaired Invalied Secondary

Another example of error is Raid Status Disabled



How to test ?

The only confirmation we can get is on the below image where it says Raid Status Enabled Paired, however I have tested swapping the SD cards out one by one and the ESXi  Server boots successfully you will immediately see the error message that the pair is disabled. Unfortunately you will need to pull the server out to change swap the SD cards but hay at least you will find out if the mirroring is working.




Also you will need to remember that after installing ESXi on SD card will give you an error message on the ESXi host that  ‘The ESXi host does not have persistent storage’  you will need to add the storage and  a scrach partition.


To create a scrach partition follow the below VMware KB.

or I might create a blog on how to do it later…

My friend Vikram has just posted the process on his blog System logs on host are stored on non-persistent storage

Please find the new updates the latest firmware is bringing.  Release 2.2(1b) adds support for the following:

IPv6 Management Support
Cisco Integrated Management Controller (CIMC) In-band Management
Fabric scaling: VLAN, VIFs, IGMP, Network Adapter Endpoints
Uni-Directional Link Detection (UDLD) Support
User Space NIC (usNIC) for Low Latency
Support for Virtual Machine Queue (VMQ)
C-Series Servers Direct Connect to FI without FEX
Two-factor Authentication for UCS Manager Logins
VM-FEX for Hyper-V Management with Microsoft SCVMM
Direct KVM Access
Server Firmware Auto Sync
Enhanced Local Storage Management
Flash Adapters and HDD Firmware Management
Precision Boot Order Control
Secure Boot
UEFI Boot Support
FlexFlash (Local SD card) Support
Trusted Platform Module (TPM) Inventory
DIMM Blacklisting and Correctable Error Reporting
C-Series Board Controller Firmware Management


Additional resources related to this post:


If you want to learn more about the process of doing a Firmware update please checkout my link CISCO UCS Firmware Update Process

If you want to learn more about the process of doing a Firmware update please checkout my link advanced boot or secure boot configuration cannot be applied to the specified server There are not enough resources overall




Posted on August 21, 2014, in Cisco B200 M3 blades, Cisco Boot Flash, Cisco FlexFlash, CISCO UCS, Cisco UCS FlexFlash, Cisco UCS M3 Blades, cisco ucs sd card, M3 Blades, mirroring sd card, raid sd card, sd card, SD Card Mirroring, Technology, Windows SQL Server EXPRESS and tagged , , , , , , , , , , , , . Bookmark the permalink. 5 Comments.

  1. Question,
    What or how would you repair everything if you lost an sd card and needed to put a new one in? Will it auto rebuild with a new card inserted?

  2. Thank you soo much! This saved me hours of frustration and I was able to use non-Crisco branded sd cards!

  1. Pingback: Cisco UCS Firmware Overview | The TechnoGeek

  2. Pingback: advanced boot or secure boot configuration cannot be applied to the specified server There are not enough resources overall | The TechnoGeek

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