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2.4
Hardware Element Overview
NOTE
: The ESM, PSU, Fan Modules, control panel, HDD and SEM are all hot-pluggable.
WARNING :
User should replace drive FRU one by one, not recommend to pull out multiple drive FRUs at
the same time without putting new HDD or dummy carrier in place.
WARNING:
The hardware element replacement maximum time, that is, from the hardware element to
replace and install a new one for this period, please refer to the following:
1)
Top cover replacement maximum time is 16 minutes.
2)
Canister replacement maximum time is 10 minutes.
3)
PSU replacement maximum time is 10 minutes.
4)
System fan module replacement maximum time is 14 minutes.
5)
Drive replacement maximum time is 12 minutes.
For safety reasons, it is recommended that the equipment should be installed as the flow chart as
shows.
Figure 2-38 Flow chart
Pull out Chassis from Rack:
see section 2.2.6.1.
Push Chassis into Rack:
see section 2.2.8.
2.4.1
ESM Canister-Expander Storage Module Canister
2.4.1.1
Overview
This section describes a typical ESM canister. The ESM canister module provides external SAS
connectivity for the three (3) Mini-SAS HDs from the rear of the canister and provides three external SAS 4
lane Mini-SAS HD (SFF-8644) connectors, a RS-232 serial port (audio jack), and three status LEDs.
2.4.1.2
ESM Canister LED
ESM canister front view refers to the picture below. There are nine LEDs on the canister face. Three LEDs
are for canister power, locate and fault. Two LEDs are for each Mini-SAS HD port active status
identification.
