Error 570 during installation

[johjoh]

Hi, I'm installing Proxmox on a Fujitsu Primergy RX300 S6 with LSI Megaraid SAS 6G 512MB Raid Controller and one volume of 2.7 TB

When Proxmox CD Installer start, it see correctly /dev/sda 2.7 TB, but at the end when it start to create data and partition it give me:

Installation failed!
The Proxmox VE could not be installed.

unable to create data volume at /usr/bin/proxinstall line 570

Anyone can help me?
Thank you!

 

[tom]

pls use a smaller raid volume for the installation (2 TB maximum)

 

[johjoh]

Thank you for your quick reply

It's possible to bypass this limit only for a time?
I have 6 x 600 GB SAS Disk, and also if I create a RAID:
- 5 x 600 GB
- 1 x Hot Spare
the total vould be 2,1 TB effective...major of 2 TB

Thank you

 

[tom]

the 2 TB is a fixed limit. best performance is raid10 with 6 disks - means you have a total usable space of 1,8 TB which is fine.

which raid level do you plan to use and why?

you can also think of using just 2 raid volumes - one for installation and the second one as LVM2 (add after installation) - using block device storage for KVM guest is known for best performance (use cache=none).

Just found a nice online tool regarding raid levels.
http://www.ibeast.com/content/tools/RaidCalc/RaidCalc.asp

 

[johjoh]

Normally I'm lover of RAID5, only 1 disk wasted.
Where I can find documentation for create the LVM2 after installation?

So, if i use RAID 5, I can make:
- 1 volume 700 GB
- 1 volume 2 TB
what do you think?

Happy WE!

 

[tom]

Raid5 has slow write speed so think twice if you use this for a virtualization host - but finally depends on what you need.

some points to consider:

do you plan to use OpenVZ AND KVM? Or just KVM? Or just OpenVZ? How much space do you need for each? How do you backup? Backup destination?

do you run a single Proxmox VE host or do you plan a cluster with (live)-migration capabilities?