Chapter 1 Tray Overviews 9
Sun StorageTek 2501 Drive Expansion Tray
Components that are accessed from the rear of the Sun StorageTek 2501 Drive
Expansion Tray are:
■ I/O Modules (IOMs) – Two removable input/output modules
■ Power-fan assemblies – Two removable power supply modules with cooling
fans. The power-fan assembly is identical and interchangeable with all power-fan
assemblies used in the 2500 Series trays.
FIGURE 1-5 Drive Expansion Tray Rear-Access Components
Controllers
The Sun StorageTek 2540, 2530, and 2510 Arrays usually have two controllers
(single-controller configurations are available, but are not recommended). The
controllers manage the input/output (I/O) between the volumes and the data host.
The controllers have an Ethernet connection to the management host for out-of-band
management and contain a battery that provides backup power to the cache memory
for up to three days in the event of a power loss.
Because each controller tray contains two controllers, the data path through one
controller can fail and the other controller provides a redundant data path to all of
the disk drives. If a controller fails, you can replace the failed controller while the
power is applied and the storage array is processing data (a hot swap).
Note – Replacement controllers might not be at the same level of firmware. If
necessary, use CAM to upgrade the firmware for the new controller so that it
matches the configuration database (baseline firmware release level or later).
1. I/O Modules
2. Power-Fan Assemblies
1
2
To Next Page
Loading...
Need help?
General
