worthy locust
Currently there are 13 shelves are chained together on stack 1 (port 0a and 0c:8 shelves) and stack 2(port 0b and 0d: 5 shelves) based on the output of command "system node run -node node-01 -command sasadmin expander_map" as shown in the attachment, if my understanding is correct.
My question is, if it is correct that we should add these 3 new shelves in the stack 2(port 0b and 0d) to keep the balance between these 2 stacks? Please advise.
snow pewter
Since this is a FAS, yes, you can freely attach those new shelves to the 0b/0d stack. In this configuration, drive assignment will be based on stack and will allow for auto-assignment to work as intended.
As long as you don't exceed 10x shelves per stack, you are OK
worthy locust
I forgot to attach the output of "sasadmin expander_map" command, but, looks I don't need to. 👍
worthy locust
@snow pewter
for case like below, should we use ports 4b and 4c for a new stack to add the new shelf?
`> system node run -node node-01 -command sasadmin expander_map
Expanders on channel 0a:
Level 1: WWN 500a098003976d29, ID 0, Serial Number ' SHFFG1648000214', Product 'FS42412IOM12F ', Rev '0150', Slot A
Expanders on channel 0b:
Level 1: WWN 500a098003976d29, ID 0, Serial Number ' SHFFG1648000214', Product 'FS42412IOM12F ', Rev '0150', Slot A
Expanders on channel 0c:
Level 1: WWN 500a098003976d29, ID 0, Serial Number ' SHFFG1648000214', Product 'FS42412IOM12F ', Rev '0150', Slot A
Expanders on channel 0d:
Level 1: WWN 500a098003976d29, ID 0, Serial Number ' SHFFG1648000214', Product 'FS42412IOM12F ', Rev '0150', Slot A
Expanders on channel 4a:
Level 1: WWN 500a09800817319d, ID 1, Serial Number ' SHFGD1826000015', Product 'DS22412IOM12A ', Rev '0281', Slot A
Expanders on channel 4b:
Cannot Complete operation on channel 4b; Status Not Available.
Expanders on channel 4c:
Cannot Complete operation on channel 4c; Status Not Available.
Expanders on channel 4d:
Level 1: WWN 500a09800817321d, ID 1, Serial Number ' SHFGD1826000015', Product 'DS22412IOM12A ', Rev '0281', Slot B`
snow pewter
is this an AFF A700s?
worthy locust
Yes
worthy locust
Correct, the other shelf is inside controller
snow pewter
yes - it's pathed 4x times
that system can support up to 8x external shelves
so you're free to attach 3x more onto 4a/4d without any issues
thereafter, you'll have room for 4x more shelves using 4b/4c
worthy locust
We are going to add a new shelf, the question is, should we extend the stack 4a/4d or create a new stack 4b/4c?
snow pewter
how many are you adding?
worthy locust
just one
worthy locust
from the performance perspective, it won't matter?
worthy locust
as long as it wouldn't exceed 4 in a stack, whether 1 or two stacks, it won't matter?
snow pewter
nope
worthy locust
Is there any issues with 300TB in one aggr? is there a limited amount in 1 aggr?
SSD drives ...
that is the amount in 1 aggr after we added a new shelf
snow pewter
Hardware Universe will tell you the maximum supported values per controller
worthy locust
from hwu, I can find max SSD's supported, max size of RG... but not max capacity of an aggregate ..