Disk Shelves and Modules

Disk type:

• ATA Disks: well… you must be already used with these types of disks.
• SATA Disks: Also for this one, already well known.
• FC disks: Fiber channel disks.
   
  Check URL : https://library.netapp.com/ecmdocs/ECMM1278264/html/smg/provisioning/reference/r_oc_prov_disk-cap.html

Shelf Models

• ds14mk2: This shelf accepts 14 FC or ATA disks, it takes 3 rack units and accepts ESH2 and AT-FCX disks.
• ds14mk4: This shelf accepts 14 FC disks, it takes 3 rack units and only accepts ESH4 disks.

Modules

Modules allow different disk shelves to be connected to the storage FC loops.

• ESH2: This module is used for FC disks and it is connected to a FC 2GB bus.
• ESH4: This module is used for FC disks and it is connected to a FC 4GB bus.
• AT-FCX: This module is used for ATA or SATA disks and it is connected to a FC 2GB bus.