Hi, has anyone already installed a bare metal Linux on a Hitachi Computer Blade 2000? The Specs Says it does support RHEL 6.2 but I cant find any documentation on Hitachi Support Site about it.
Yes, you can either use each blade in Basic mode (as a separate server, no virtualization) or enable HVM and use LPARs (embedded hardware-based virtualization). I think the first is referred to as "bare metal", although I personally think both modes can be considered bare metal as there is no operating system or other software layer involved.
The basic mode is easy to configure. First, you need to remove any LPARs you may already have created, and disable HVM. Then go to the chassis web interface and configure the partition IPs - these will be the BMC IPs of the blades:
Then go to "Server blades management" and access one of the blades:
Access the blade web console (BMC web interface):
Click "Launch Remote Console" and enter the default credentials (user01/pass01):
At this point you should get a console window to the blade you want to boot/install:
Use "Remote CD/DVD" menu to attach any ISO you want to boot from and then proceed with installation as usual.
As far as I know all current blade models support RHEL up to 6.4. The latest CB2000 Software Guide states the following:
What is the model of the blades you have in the chassis? I have personally seen RHEL 6.4 running fine on X55A2, X57A2, and X55R3 models.
I've done 6.2 to 6.4. The only gotcha is if you're using boot from SAN. Redhat in their infinite wisdom upgraded the device driver format (rhdd ->rhdd3) sometime after 6.2, which means you'll need some of the latest drivers for it to work. If you only happen to have 6.2 drivers, there is a good chance the disk drivers will fail to load.
I thought that was the driver disk format that changed, not the driver itself. So if a driver disk was needed previously to boot from SAN - or even locally if the Linux distro didn't have the RAID controller driver - then this disk (i.e. disk image) needs to be rebuilt.
I didn't need a driver disk for RHEL 6.3 and 6.4 for local boot and Oracle Linix 6.2 SAN boot.
It was just a format change. The driver I had however only hadd the old rhdd format so I couldn't use it. I had to get a newer driver which had the rhdd3 format in the bundle (driver I have no doubt was the same). Cant remember what model blade it was.....
The blades are a E55R3. According to the list you passed it is supported. But how is the process of booting/installing the ISOs? Have you found any documentation about this? What I could do so far was to connect to the blade 's web interface, set the OS mode to HVM, connect to the telnet interface and then create an LPAR. There's this Basic mode, which Im guessing that is the bare metal but Im not sure how to configure it as well.
Hi Michael, Thank you for your assistance! I really appreciated it!
Actually I had tried to connect to the remote console before, but my mistake was not to wait enough to the boot screen to show up. It take a few minutes to show the boot screen.
Now I reconnected again, but I booted using a USB CD-ROM, which worked well too.
I'm glad this helped. Feel free to ask any other questions you may have.
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