Supercap units (RAID backup)
Each supercap unit backs up one RAID controller in
the corresponding node (numbered 1—4).
6
Front-loading drives
Node 2-controlled drive bays 1—6
All six bays support SAS/SATA drives; bays 1 and
2 also support NVME drives.
2
Compute node (up to four)
7
Front-loading drives
Node 3-controlled drive bays 1—6
All six bays support SAS/SATA drives; bays 1 and
2 also support NVME drives.
3
Power supplies (two, redundant 1+1)
8
Front-loading drives
Node 4-controlled drive bays 1—6
All six bays support SAS/SATA drives; bays 1 and
2 also support NVME drives.
4
Replacing Front-Loading SAS/SATA Drives
You do not have to shut down the drive or the corresponding compute node to replace SAS/SATA hard drives
or SSDs because they are hot-swappable.
Note
SAS/SATA Drive Population Guidelines
The chassis can hold up to 24 front-loading, 2.5-inch drives. Each installed compute node can control the six
drives that correspond to the node number in the chassis.
• The four compute node groups are marked on the bottom lip of the chassis (below the drives).
• In each of the four compute node groups, the drives are enumerated 1- 6.
• In each of the compute node groups, populate the lowest numbered bays first.
• Drives installed in front-panel bays that do not have a corresponding compute node are not seen by the
system.
• Keep an empty drive blanking tray in any unused bays to ensure proper airflow.
• You can mix SAS/SATA hard drives and SAS/SATA SSDs in the same server. However, you cannot
configure a logical volume (virtual drive) that contains a mix of hard drives and SSDs. That is, when
you create a logical volume, it must contain all SAS/SATA hard drives or all SAS/SATA SSDs.
Maintaining the Server Chassis
13
Maintaining the Server Chassis
Replacing Front-Loading SAS/SATA Drives
