Click the Exhibit button.
You want to add shelves to an AFF A300 HA pair that currently has six DS224C shelves already connected. You are using the onboard SAS port only, and you want to keep the multipath high availability (MPHA) configuration.
Referring to the exhibit, what is the maximum number of additional shelves allowed to be added in this configuration? (Choose the best answer.)
The AFF A300 configuration shows that max data rate is provided by the SAS interface for the connection of shelves. The onboard SAS ports are limited and each stack configuration supports a maximum of 4 shelves when keeping multipath high availability (MPHA) configuration in mind. Given that there are already 6 DS224C shelves and each existing stack is assumed to utilize 2 ports, only 2 additional shelves can be accommodated to maintain MPHA setup and stay within the hardware capabilities. This results in a total of 2 additional shelves allowed. Therefore, the maximum number of additional shelves allowed is 2.
Max shelves in SSD loop is 4, we have only 8 SAS ports onboard, therefore we can add only 2 shelves. Ansver is A
agree We have 6 shelves already. So 2 stacks are cabled as we have a max limit of 4 in an SSD stack. Per stack, we require 2 ports per controller, because 1 port for square loop and 1 port for circle loop. As we have 2 stacks, we use all ports (4) on each controller. We can add 2 more shelves to complete the second stack to its maximum of 4 shelves. Graphic: https://library.netapp.com/ecm/ecm_get_file/ECMM1280392 page 33 for example
Ans is A Go to : https://hwu.netapp.com/ add an AFF300 and max shelves you will see the good result ;)
Agree its 4 per loop for SSD so A
Answer is A - max stack is 4.
B is correct, MAX supported SSD are 384
As you have 2 remaining port on each node. you can add a new stack of 4 shelves for each node so 8 shelves. You can complete the first stack with 1 shelve on each node so 2 shelves. 10 shelves can be added
The LED display on the left shows the shelf ID indicator. You can have up to ten shelves in a stack. For the numbering, the first stack should start at zero, the next stack starts at ten and then twenty and so on.
so...maybe D ?
Is it not 4 as it already has 6 installed?
i agree with you...i don t know why it should be different...
It says there are 6 shelves, its doesn't mention that 4 of them are in one stack and 2 in another stack. As SSD loop max is 4, we assume we can ad an additional 2 to the existing stack of 2
I think the answer should be B