Chapter 5 Configuration Overview 5-5
5.1.4 Write-Back and Write-Through Cache Options
Unfinished writes are cached in memory in write-back mode. If power to the array is
discontinued, data stored in the cache memory is not lost. Battery modules can
support cache memory for 72 hours.
Write cache is not automatically disabled when the battery is offline due to battery
failure or a disconnected battery. You can enable or disable the write-back cache
capabilities of the RAID controller. To ensure data integrity, you can choose to
disable the Write Back cache option and switch to the Write Through cache option
through the firmware application by choosing “view and edit Configuration
parameters
→ Caching Parameters.”
5.2 Software Management Tools
You can manage your array through an out-of-band or in-band connection.
5.2.1 Out-of-Band Connection
With the out-of-band serial port connection, you can use a Solaris tip session or a
Microsoft Windows terminal emulation program to access the firmware application.
For details, see “Setting Up the Serial Port Connection” on page F-1.
With the out-of-band Ethernet port connection, you can use the telnet command to
access the firmware application. For details, see “Setting Up Out-of-Band
Management Over Ethernet” on page 4-20.
You can also configure an array over the Ethernet connection with the CLI and the
Sun StorEdge Configuration Service software.
Caution – If you assign an IP address to an array to manage it out-of-band, for
security reasons it is advisable to put the IP address on a private network rather than
a publicly routable network.
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