Hot-adding a SAS disk shelf
You can hot-add a SAS disk shelf to an existing stack of supported SAS disk shelves; you can also
hot-add a SAS disk shelf to a SAS HBA or an onboard SAS port on the controller (as a new stack).
Hot-adding a disk shelf involves installing, cabling, and verifying the disk drive and disk shelf
firmware versions.
Before you begin
•
Your storage system must meet the requirements for the disk shelf you are hot-adding
including supported disk shelves, SAS cables, number of stacks, and number of disk shelves in
a stack.
•
Your system cannot have any SAS cabling error messages.
You can download and run Active IQ Config Advisor to view any SAS cabling error messages
and the corrective actions you should take.
NetApp Downloads: Config Advisor
•
If you are hot-adding a single disk shelf or a stack of disk shelves directly to a system
controller, you must have met the following requirements:
◦
Each controller in your storage system must have enough available PCI SAS HBA or
onboard SAS ports.
◦
You must have identified the correct controller port pairs that you can use to cable the disk
shelf.
The
SAS and ACP Cabling Guide for DS4243, DS2246, DS4486, and DS4246 Disk
Shelves has completed port pair worksheets for common configurations that you can use. If
there is no completed worksheet for your configuration, fill out a worksheet template.
Note: You must define controller port pairs and cable the SAS connections according to
the cabling rules (and worksheets) defined in the
SAS and ACP Cabling Guide for
DS4243, DS2246, DS4486, and DS4246 Disk Shelves.
•
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.
•
If you are hot-adding a disk shelf with SAS optical cables to a stack of disk shelves that is
connected with SAS copper cables, you can temporarily have both cable types present in the
stack.
After hot-adding the disk shelf, you must replace the SAS copper cables for the rest of the
shelf-to-shelf connections in the stack and the shelf-to-controller connections from the first and
last disk shelf in the stack so that the stack meets the cabling rules for using SAS optical and
SAS copper cables. This means that you must have ordered the appropriate number of SAS
optical cables.
Note: If you have a multipath HA or single-controller-dual-path (multipath) system, you can
replace cables nondisruptively. If you have a single-controller-single-path or FAS2xxx
mixed-path system, you must halt your system. The "Replacing SAS cables" section of this
document has more information.
DS4243, DS2246, DS4486, and DS4246 Installation and Service Guide
11
Hot-adding a SAS disk shelf
