Maximum 6GB & 12GB SAS Stack Size for Fabric Metrocluster

[JKW4]

Can someone please tell me what the maximum stack sizes are for a Fabric MetroCluster using ATTO 7500N Fiber Bridges?

Can you point me to a specific reference?

I see that there are only 4 SAS ports per ATTO device, but what is the maximum stack depth?

Thank You, Happy Holidays,

Joe

[CHRISMAKI]

Slide 59 of the MetroCluster for ONTAP 9.12.1 Technical Presentation indicates:

• Supports multiple storage stacks
• Supports up to 240 drives
• Can mix SSD and HDD disks

so however you get there is up to you. You will be constrained by the maximum stack size on the controller however, if you were try to deploy 20xDS212c's, that won't work. There is also the following constraints: minimum 2 ATTO switches per stack, DR groups cannot share ATTO switches.