The SATA Port Multiplier (SATA PM) permits a change to that point-to-point
relationship via port multiplication technology. Port multipliers allow easy, cost-
effective storage expansion and enable the aggregation of the performance of
A Serial ATA port multiplier (SATA PM) is a device that allows multiple SATA
devices to be connected to a single SATA host port. Many common controllers do
not support this feature, as it is not a requirement for a SATA controller.
A port multiplier enables up to 15 drives or devices to connect to each SATA Host
port. Unfortunately, the bandwidth available to all of the drives is limited to the
shared bandwidth of the SATA Host port at 1.5 Gbps, 3.0 Gbps or 6.0 Gbps.
To ensure maximum performance the SATA port multiplier supports SATA III host
controllers and hard drives, with transfer speeds up to 6 Gbps, so you can
experience fast performance, even with 5 individual drives connected. For a
People look to SAS expanders and SATA port multipliers for convenient
expansion, but in many cases they are not competing technologies. Portmultipliers are mainly used for bulk storage when cost is the dominant
Optimizes port usage enabling you to connect up to five SATA drives to a single
SATA port. To ensure maximum performance the SATA port multiplier supports
SATA III host controllers and hard drives, with transfer speeds up to 6 Gbps, so
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The SATA port multiplier (PM) can be used to expand the drive scalability of
storage systems cost-effectively. However, there has been little work studying the
reliability of the SATA PMs. As stor- age systems reach the petabytes and
exabytes era ...