I have a question regarding how Xenserver 7.0 sees and add local storage raid arrays from a Dell R710 server.
Originally, the server came with a raid 5 setup of 4 hard drives, for a total of 800GB of space. I installed Xenserver on top of this raid array, which were the only array on the server. As you might expected, this created a "Local Storage" in Xenserver of the disk type LVM. By this time, the server still has two extra hard drive slots sits empty.
Fast forward a week or so, my CTO hands me two extra Seagate hard drives, each has 4 TB worth of disk space. I was tasked to add those extra storage in the Xenserver hypervisor. So I went ahead and plugged those two HDs into the R710 which the Xenserver sits on, rebooted the server and went into the PERC6/i Integrated BIOS Configuration Utility which is the raid controller my server uses. Here in the raid controller bios menu, I found out that the original 4 hard drives are configured to be virtual disk 0, with raid 5 configuration. So I went ahead and created another raid array using the Bios, I was only giving the option of adding another virtual disk outside of virtual disk 0, with raid 0 or raid 1, so I went ahead and created a virtual disk 1 that has total of 4 TB of storage space with raid 0 setup (Dell PERC6/i only supports individual disks of up to 2 TB of space, so it can only see my 4TB disks as 2TB individual disks, hence the total storage space of 4 TB). I saved the settings then reboot the server, and waited until the Xenserver menu were displayed.
Here is where it gets weird. I know that I need to create a new SR using the Xenserver with the new storage space that I added with a new raid array, but it seems that Xenserver does not see the new virtual disk 1 that I created in the dell server using raid 0 configuration. I went to the console and used fdisk -l, and the command did not return the new virtual disk that I just created, of course the Xenserver's adding a new storage repository feature can not be completed for me, since the new storage space were not being read by Xenserver.
So I need some help to make Xenserver to "see" my new virtual disk created by another raid array, or do I need to reinstall Xenserver all over again, so this time i can create one LVM partition across virtual disk 0 and virtual disk 1 that are created by two different raid configurations in the same server? Can this even be done? I am new to server storage, so this might seems a common configuration problem.
One more thing to address, the 4 hard disk that sits in the Dell server originally are SAS hds, the two new HDs that I am adding are regular SATA disks, thus they can not be added to the same raid array by default, I believe they have to form their own raid configurations.
