Acer Network Device Altos R520 - Manual (Page 60)

3 System upgrade 50
Configuring the storage devices
The system supports 2.5-inch storage devices. It accommodates slim-
line optical drives and depending on system model, can support up to
six 2.5-inch hot-plug SATA hard disk drives or eight hot-plug SAS hard
disk drives.
Caution! To maintain proper system cooling, filler panels must be
installed if a device is not replaced.
Removing and installing a hard disk drive
Note: Use only Acer-qualified SAS or SATA HDDs. To purchase a
SAS or SATA HDD, contact your local Acer representative.
Caution! To ensure proper airflow and server cooling, all drive
bays must contain either a carrier with a hard drive installed in it
or a hard disk carrier cover.
Determining drive status
Each HDD carrier features two status LED indicators to display the hard
drive status. If you are replacing a failed HDD, determine which drive
has failed by checking the drive status LED. For more information on
how to determine the drive status, refer to “Hot-plug HDD LED
indicators” on page 25.