Lenovo 7D7Y Service Manual page 10

Lenovo Data Center Support
• Best practice is to have the current versions of disk shelf (IOM) firmware and disk drive firmware on your
system before adding new disk shelves, shelf FRU components, or SAS cables. Current versions of
firmware can be found on the Lenovo Support Web site.
Lenovo Data Center Support
• Disk drive firmware is automatically updated (nondisruptively) on new disk drives with non current
firmware versions.
Note: Disk drive firmware checks occur every two minutes.
• If needed, you can turn on the disk shelf's location (blue) LEDs to aid in physically locating the affected
disk shelf:
storage shelf location-led modify -node node_name -shelf-name shelf_name -led-status on
A disk shelf has three location (blue) LEDs: one on the operator display panel and one on each IOM12
module. Location LEDs remain illuminated for 30 minutes. You can turn them off by entering the same
command, but using the off option.
• If needed, you can refer to the Monitoring disk shelf LEDs section for information about the meaning and
location of disk shelf LEDs on the operator display panel and FRU components.
• The DM600S drive shelf consist of five drive drawers (drive drawer 1 at the top through drive drawer 5 at
the bottom) that each contain 12 drive slots.
• The following illustration shows how the drives are numbered from 0 to 11 in each drive drawer within the
shelf.
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Service Guide for DM120S, DM240S, and DM600S