Best Practices for SAS Cabling in AFF A700 Systems:
The AFF A700 system has built-in SAS ports (e.g., 2a and 2b) as well as additional SAS ports on optional SAS cards.
To ensure high availability and redundancy, it is recommended to distribute SAS connections across multiple SAS ports from different controllers or slots.
Why Port 2a and 9a Are Recommended:
Port 2a is a built-in SAS port on the AFF A700 system. Port 9a belongs to the additional SAS card in slot 9. By connecting the stack using 2a and 9a, you utilize different SAS domains (built-in controller ports and add-on card ports), providing both path redundancy and load balancing.

To replace a drawer in a DS460c shelf, the following steps must be taken:
1. Disconnect the cable chains from the chassis
Why this is required:
Cable chains connect the drawer to the shelf and must be disconnected to safely remove the drawer.
2. Evacuate all drives in the drawer
Why this is required:
Drives must be removed to avoid damage during the drawer replacement process and to reduce the weight of the drawer for safe handling.

A new boot device requires restoration of the ONTAP boot image. This is typically performed using a USB recovery device or image synchronization from the HA partner. SSD initialization and switch replacement are unrelated. AutoSupport settings do not affect boot image restoration procedures.

RAID-DP tolerates two disk failures, but removing the wrong disk increases risk exposure significantly. If another disk fails before reconstruction finishes, aggregate degradation or possible data unavailability can occur. Firmware corruption and automatic encryption are unrelated. Proper disk identification procedures are critical during maintenance activities.