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Preinstalled Components
Shown below are the components pre-installed in the system:
Controllers
LED front panels
DIMM module for Unified Storage Systems
CBM
PSUs including cooling modules
Host board
Components to be Installed
You must install the following components:
The enclosure itself (please refer to the Slide Rail Kit Installation Guide)
Hard drives
Cabling
Installing Drives
Installation of drives should only occur after the enclosure has been rack-mounted!
Drive Installation Prerequisites
Drives are separately purchased and when purchasing drives, the following factors should
be considered:
Capacity (MB/GB):
Use drives with the same capacity. RAID arrays use a “least-common-
denominator” approach, meaning the maximum capacity used in each drive for
composing a RAID array is the maximum capacity of the smallest drive. Therefore, it is
recommended to use large storage capacity drives.
WARNING
Even the drives by the same manufacturer, of the same model, and claiming the
same rated capacity may actually carry different block numbers meaning that their
capacity may not be exactly the same.
When configuring drives into a RAID array, you may use a slightly smaller capacity
as the “
Maximum Disk Capacity
” in each individual drive. The configuration option
can be found in the interface-specific firmware manual that came with your
enclosure.
Profile:
The drive trays and bays of the system are designed for 2.5” or 3.5” hard drives
and SSDs, depending on the PS model.
Drive type:
The system uses SAS (3Gbps, 6Gbps or 12Gbps), SATA and Near-line 2.5” or
3.5” hard drives and SSDs. Please ensure that you purchase the correct drives.
NOTE
PS 3025 All-Flash models can ONLY use Solid State Drives (SSDs).
For models other than PS 3025 All-Flash, if you prefer using SATA hard drives in a
Dual Controller Unified Storage System or in attached expansion enclosures, make
sure you also purchase MUX kits.
