Dell PowerEdge R420 Manuel technique - Page 20
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The Dell PowerEdge R420 supports internal and external storage options and controllers, different
drive types, and different chassis configurations for a varied number of drives.
Features such as CacheCade™ provide accelerated performance over previous technologies.
CacheCade uses Dell PERC storage controllers to accelerate performance over hard drives or
traditional solid-state drives.
R420 has three chassis to support up to three different drive-bay options.
4 x 3.5-inch drive option (base config, cabled tray)
4 x 3.5-inch drive option (volume config, hot-plug tray; 2.5-inch hybrid kit available for 2.5-inch
drives)
8 x 2.5-inch drive option (maximum drive support in 1U, hot-plug tray)
The R420 supports up to eight 2.5-inch or four 3.5-inch hard drives or solid-state drives.
Self-encrypting drives (SED) are available. Table 11 lists more information about these drives. For an
up-to-date list of supported hard drives for the R420, see Dell.com/PowerEdge.
Form
Type
factor
Nearline SAS
SAS
SAS
SAS SSD
SATA SSD
SATA*
SATA
Nearline SAS
SAS
* Applies to the 8-drive bay only.
Speed
(rpm)
N/A
*
10K
15K
N/A
N/A
N/A
7.2K
7.2K
15K
Capacities
500G, 1TB, 1TB SED
300GB, 600GB, 900GB, 900GB SED
146GB, 300GB, 300GB SED
200GB, 400GB
100GB, 200GB
250GB, 500GB, 1TB
500GB, 1TB, 2TB
1TB, 2TB, 3TB
300GB, 600GB