MammaGutt wrote:
You ask a lot of questions without a specific scenario.
What was normal in the legacy days of V class was that you installed chassis/cages to match your set size. The "normal" set size way-back-when was R5 (3+1) and R6 (6+2) meaning you would/should always install 4 and 4 cages per node pair, which matched with adding one FC HBA per node during each upgrade.
Once you had a nice system with a multiple of 4 cages per node pair, you would install one mag per chassis/cage. That would ensure you could maintain a perfect balance and HA cage. If/when you got to the point where all slots were full in all chassis/cages you would in a best case scenario add full chassis/cages with identical configuration as the other chassis/cages on the node pair/system to ensure that the system was balanced and you avoided hot spots. If that was an upgrade too steep, you could also move magazines between chassis/cages to achieve the balance. Keep in mind, moving magazines on a V class is not a straight forward job.
There is no issues adding chassis/cages before existing cages are full. However, all cages _must_ have at least two magazines installed.
Btw, why are you still fidling around with an old V class? Parts cost a fortune, the system costs a fortune, you need a shitload of space, power and cooling for something you could achieve for a fraction of the cost with a 7k or 8k system. I'm even pretty sure that at least the 8k would be faster.... perhaps even the 7k as well (unless it's a 7200).
Hi MammaGutt,
Thanks a lot for your reply. My manager says this is a high-end Storage and we would use it for more 3 years, that's why I need add more space to it.
The scenario is:
2 nodes with 6 chassis (cages), the magazines numbers in these are 10 10 9 9 9 9 from chassis 0 to 5.
I want to install 2 chassises with 13 magazines.
New questiones are:
1.Is my scenario supported ?
2.If the magazines number is not acceptable, which number is good and also bigger than 13 (we need install at least 52 hdd)?
3.which slot and port should I connect the 2 new chassises 4 ports?
Thank you again!