NetApp DS4246 User Manual

and the shelf-to-controller connections so that the stack meets the cabling rules stated in the
"Hot-adding a SAS disk shelf" section of this document; otherwise, go to the next step.
Use the appropriate cable replacement procedure for your configuration in the "Replacing SAS
Cables" section of this document.
8. If running a version of Data ONTAP prior to 8.2.1, go to Verifying the disk drive, disk shelf,
and ACP firmware versions .
SAS cabling error messages
After you have cabled the SAS connections for your hot-added disk shelf, one of two error
messages can appear on the console if there is a problem with the disk shelf IDs.
Some of the corrective actions in these error messages are disruptive.
ses.shelf.invalNum
Description
This message occurs when Data ONTAP detects that a Serial Attached SCSI (SAS) disk
shelf connected to the system has an invalid disk shelf number.
Corrective action
1.
Power-cycle the disk shelf.
2. If the problem persists, replace the disk shelf modules.
3. If the problem persists, replace the disk shelf.
ses.shelf.sameNumReassign
Description
This message occurs when Data ONTAP detects more than one Serial Attached SCSI (SAS)
disk shelf connected to the same adapter with the same disk shelf number.
Corrective action
1. Change the disk shelf number on the disk shelf to one that does not conflict with other
shelves attached to the same adapter.
2. Halt the system and reboot the disk shelf.
3. If the problem persists, contact technical support.
Verifying the disk drive, disk shelf, and ACP firmware versions
Because versions of Data ONTAP prior to 8.2.1 do not always automatically update the disk drive,
disk shelf, and ACP firmware on hot-added SAS disk shelves, you should verify that the disk
drive, disk shelf (IOM), and if applicable, ACP firmware are the most current versions. If they are
not, you must update the firmware.
About this task
• Updating disk drive firmware is disruptive.
You manually force an update of the disk drive firmware (on all disk drives or a specified list
of disk drives on a node) using the disk_fw_update command for 7-Mode and the
storage disk firmware update
command for clustered Data ONTAP. Using these commands disrupts client access and can
take up to 10 minutes for each disk drive.
• Updating disk shelf and ACP firmware is nondisruptive.
DS4243, DS2246, DS4486, and DS4246 Installation and Service Guide 18
Hot-adding a SAS disk shelf

NetApp DS4246 Specifications

General

Data transfer rate	6 Gbit/s
Storage drive size	3.5 \
Storage drive interface	Serial Attached SCSI (SAS)
Storage drives installed	Yes
Installed storage drive type	HDD
Supported storage drive types	HDD & SSD
Total installed storage capacity	40.8 TB
Maximum supported storage capacity	- TB
Number of storage drives installed	24
Chassis type	Rack (4U)
Product color	Black
Device class	Large Enterprise Business
AC input voltage	100-240 V
AC input frequency	50 - 60 Hz
Number of power supply units	2
Operating altitude	0 - 3045 m
Non-operating altitude	-305 - 12192 m
Storage temperature (T-T)	-40 - 70 °C
Operating temperature (T-T)	10 - 40 °C
Storage relative humidity (H-H)	10 - 95 %
Operating relative humidity (H-H)	20 - 80 %

Weight and Dimensions

Depth	610 mm
Width	483 mm
Height	178 mm