In the non-tiered deployment mode, all physical disks are high-speed SSDs. Compared with the tiered mode, the data partitions in this mode deliver the same performance as cache partitions and do not require additional read caching. Therefore, no cache partitions are included on any physical disk.
ACOS can be either installed on two physical disks that form software RAID 1, or independently installed on two physical disks that form hardware RAID 1. Under these two deployment methods, only the partitions on the system disks differ, while the partitions on other disks remain the same.
The physical disks on a single node are described as follows:
ACOS installed on hardware RAID 1
ACOS is installed on two independent SSDs, which, together with the storage controller, form a hardware RAID 1 and serve as the system disk. Other physical disks in the node serve as data disks.
ACOS installed on software RAID 1
ACOS is installed on two SSDs configured with software RAID 1. The remaining storage space is used for data. Other physical disks in the node serve as data disks.
In the non-tiered storage mode, the data redundancy policy can only be the replication policy.
