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Cisco Employee

UCS C series maximum hard drive size

Looking for info on the maximum hard drive size support on teh UCS C series.  I have a C200M2 that I added a 4TB drive, I have updated the server to the latest firmware and BIOS however the server shows the drive size is 2TB.

Everyone's tags (1)

Re: UCS C series maximum hard drive size

Hi!  and welcome to the community mate!

Here is the table that shows the supported disk's PID for the C200 server:


If you successfully installed ONE HDD of 4GB and made it work, you were lucky cause I don't see any disk with that size, I have not even seen a disk of that size for UCS yet.

I am wondering if perhaps you installed 4 disks of 1TB and configured them in RAID 1 which would explain the reason for the size to go down to half of the capacity of the array as RAID 1 is a mirror.

Let me know if I misunderstood you.

Rate ALL helpful answers.


Cisco Employee

Can you clarify a few things1

Can you clarify a few things

1. What RAID level is this 4TB drive set up for?

- What size and speed are the hard drives? (1 TB 7.2k RPM SATA, 300 GB 10k RPM SAS)

- How many drives are installed in the C200? 

2. What RAID controller is installed on the server? 

3. What do you mean by "server" here? 

- UCS CIMC showing 2 TB? 

- Operating system showing 2 TB? 

4. What operating system is installed on the server?