8. In Step
on page 51, if you had a version of disk shelf firmware other than the most current
version on the NetApp Support Site, download the disk shelf firmware file by using the
procedure at
NetApp Downloads: Disk Shelf Firmware
.
Hot-swapping a disk drive or carrier
When a disk drive or carrier fails, the storage system logs a warning message to the system
console indicating which disk drive or carrier has failed. In addition, both the fault LED on the
operator display panel and the fault LED on the failed disk drive or carrier are illuminated. For
DS4486 disk shelves, the disk carrier fault LED blinks and the H1 shelf mode appears in the shelf
digital display. You can hot-swap a disk drive or carrier while the system remains powered on.
Before you begin
•
The disk drive that you are installing must be supported by your disk shelf model.
•
If you have a DS4486 disk shelf, the following requirements apply:
◦
You can only hot-swap a disk carrier (you replace the disk carrier, not individual disk drives
in the carrier) after the disk shelf has exited H1 shelf mode.
Attention: Removing a faulted disk carrier while
the shelf is still in H1 shelf mode causes a double-
disk failure.
The disk shelf with the faulted disk carrier exits the H1 shelf mode after the data from the
good disk drive in the faulted disk carrier has been copied to a spare disk drive. It can take
eight to more than 12 hours for each terabyte of data to finish copying from a good disk to
a spare disk. The disk copies operate in the background and are throttled to minimize
impact to client I/O.
The "What the disk carrier LEDs and H1 shelf mode mean for DS4486 disk shelves"
section describes the LED and H1 shelf mode behavior that indicates when it is safe to
remove a faulted disk carrier.
◦
You must have read and understood "Rules for handling disk carriers for DS4486 disk
shelves" to prevent damage to the disk drives in the disk carriers.
•
Disk shelf (IOM), disk drive, and if applicable, ACP firmware should be current on all disk
shelves in your system before adding new disk shelves, shelf FRU components, or SAS cables.
The best practice is to always have the most current versions of firmware on your system.
NetApp Downloads: Disk Shelf Firmware
NetApp Downloads: Disk Drive Firmware
Note: Do not revert firmware to a version that does not support the disk shelves, disk shelf
FRU components, or SAS cables in your system.
About this task
•
When removing a disk drive or carrier in a disk shelf, wait a minimum of 10 seconds before
inserting a new disk drive to allow the storage system to recognize that the disk drive was
removed.
•
Always use two hands when removing, installing, or carrying a disk drive or carrier.
Attention: Do not place hands on the disk drive
boards exposed on the underside of the disk carrier.
•
If you have a DS4243,DS4246, or DS2246 disk shelf, how you hot-swap the disk drive
depends how the disk drive is being used.
By using the correct procedure, you can prevent unwanted AutoSupport notifications from
being generated. Depending on your system, disk drives with Storage Encryption might require
DS4243, DS2246, DS4486, and DS4246 Installation and Service Guide
52
Replacing disk shelf components
