My goal is to create a cluster of 2 cheap servers in raid 1 with DRBD to replace a high-end server with SCSI-raid and expensive reliable components.
I have a feeling you can get more reliability this way for even less money.
I assembled 2 core i5 machines (8 GB RAM) with each a 150 GB raptor and a 1 TB seagate SATA disk. Creating the cluster was quite easy and I'm currently waiting for 2 extra ethernet adapters to put those 2 disks in RAID 1 with DRBD.
I still don't know what I can expect from proxmox when this cluster of 2 proxmox-nodes is working in combination with DRBD. Whilst waiting for these 2 ethernet adapters I have a couple of question of which I hope to get an answer.
Will it be possible to get full redundancy when 1 of the nodes fails? Is this redundancy seemless and transparant? If not, how much downtime will I get and do I need to manually intervene?
I'm a bit overwhelmed by these different techniques and still have to find out how to combine these (proxmox, heartbeat, iSCSI and DRBD) and how they interact.
Should I create 1 big LVM-partition on each system and then make 1 DRBD-blockdevice of it or is it wiser to create separate blockdevices?
I have a feeling you can get more reliability this way for even less money.
I assembled 2 core i5 machines (8 GB RAM) with each a 150 GB raptor and a 1 TB seagate SATA disk. Creating the cluster was quite easy and I'm currently waiting for 2 extra ethernet adapters to put those 2 disks in RAID 1 with DRBD.
I still don't know what I can expect from proxmox when this cluster of 2 proxmox-nodes is working in combination with DRBD. Whilst waiting for these 2 ethernet adapters I have a couple of question of which I hope to get an answer.
Will it be possible to get full redundancy when 1 of the nodes fails? Is this redundancy seemless and transparant? If not, how much downtime will I get and do I need to manually intervene?
I'm a bit overwhelmed by these different techniques and still have to find out how to combine these (proxmox, heartbeat, iSCSI and DRBD) and how they interact.
Should I create 1 big LVM-partition on each system and then make 1 DRBD-blockdevice of it or is it wiser to create separate blockdevices?