Sun StorEdge N8200 Filer Installation, Configuration, and Service Guide
25
Disk Storage Unit Hot Spare Operation
A hot spare is an extra data disk used in the event of a failure of one of the data
disks in a disk storage unit. If a data disk in a disk storage unit fails, the unit enters
a degraded mode until all of the data on the failed disk is re-created on the hot
spare. This process typically takes between one and two hours. The hot spare disk in
the disk storage unit is in the right-most drive slot and is labeled “1,5”.
If a data disk fails, the hot spare becomes active. If the active hot spare fails, the
failure is reported in three ways:
■
An amber LED on the disk drive goes lights
■
You receive an SNMP trap message
■
An email message is sent to the address established with the Settings function.
Refer to Sun StorEdge N8000 Series Filer Administrator’s Guide, Chapter 3, in the
“To Change Email Notifications” section.
If an inactive hot spare fails, the only way to detect the failure is to issue a
healthchk
command from the console.
The procedure for replacing a hot spare is identical to the procedure for replacing a
data disk. Refer to “A Data Disk in a Disk Storage Unit Fails” on page 24.
