SATA3.0 1 to 5 Hub Ports SATA Port Splitter Swith Multiplier Card Motherboard 6Gbps Riser Card SATA 3.0 Expansion Card Support PM JMICRON JMB575

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As far as i know the JMB585 ist a true PCIgen3x2 Controller with 5x individual SATA ports which in turn support SATA port miltipliers as the 575 again supporting up to 25 ports in total. SATA PCIe is a kind of extension card that we can install on the motherboard’s PCIe slots to install multiple SATA drives (Hard Drive, SSD, Optical drives, and other SATA devices). These require special cables called SAS to SATA cables. The LSI Logic Controller Card LSI00301 above can support 8 SATA ports. Hence here you will find two SAS-4 SATA ports cables. These are intended for professional and enterprise use. For NAS users, mainly, these are highly recommended. You can easily find 2-8 SATA ports on these. However, it is essential to take note of how many PCIe lanes the expansion card utilizes so that you understand the upstream and downstream bandwidth of the expansion card.

This solution works great for me. It offers better performance than port multiplying so long as you have a PCIe port available. If you don't, you can think about splitting your PCIe instead of the SATA ( from x1 to USB then to four x1 as shown below or to one x16). This is a prominent characteristic to look for. You can find SATA expansion cards with 2-8 SATA ports. You can increase the number of SATA ports on motherboards in various ways, and all these ways are explained below. Adding More SATA Ports Can Help You You can buy SATA to PCIe extension cards, SATA hub port multipliers, or SAS SATA expansion cards to increase the number of SATA ports on your motherboard. This is an answer to a duplicate of this question, where you use a RAID enclosure like this that takes a single SATA input but supports two drives, and run it as RAID 0 so it's a striped drive and you get all the drive space. This solution should offer pretty good speed, especially if you have HDDs that benefit from RAID 0. The big limitation here is that, even though you have different drives, they get viewed as one by the RAID, so you have to work against that. Definitely not hot-swap friendly.While they are cheap, we do not generally recommend these due to performance and compatibility issues. 2. SATA PCIe Cards (Recommended for Most Users) So if you want to install 2 or multiple HDDs and your motherboard doesnt have a sufficient number of SATA ports, then you can increase the number of SATA ports on your motherboard. The difference in speed between the two versions is huge. While version 2.0 SATA ports offer a maximum transfer speed of three Gbps with a throughput of 375MB/s, version 3.0 SATA ports provide transfer speeds of up to six Gbps with a throughput of 750MB/s. – Number of Slots the Ports Has Support would be subject to the expansion card's SATA controller, not the motherboard's SATA controller, any limitation of the motherboard's SATA controller would not be applicable to the expansion card.

While they may be inexpensive, they are inefficient and produce low scores on the performance and compatibility board. Unless you’re on a tight budget, we do not recommend that you add SATA ports to motherboard via these expansion cards. Command-based switching, conceptually similar to a mechanical A/B switch, limits the host to issue commands to only one drive at a time. Commands to other drives will not be issued until the command queue is completed for the prior transaction. Since command-based switching only accesses one drive at a time, it does not take advantage of the potentially higher speed host link. Therefore, command-based switching is ideal for simple drive expansion where capacity is more important than performance. Lastly, the critical consideration when choosing the SATA expansion card is whether it has a built-in hardware RAID controller. If you want to expand your system’s storage space with improved performance, then SATA 2.5″ SSDs offer more convenient solution than external hard drives.

If you’re building a normal PC you want to use at home, two SATA ports should be enough. But if your build is like a NAS PC that requires multiple storage devices, then you’ll n eed extra SATA ports depending on your storage needs. How To Add More SATA Ports

This system can be thought of as an automated mechanical A/B switch. The controller can issue commands to only one disk at a time and cannot issue commands to another disk until the command queue has been completed for the current transactions. This also hampers the use of Native Command Queuing (NCQ). This means that the full bandwidth of the link will most likely not be used. This kind of switching is therefore used when capacity is the major concern, and not performance.Campaigns run at an idle state until you copy, read, install, or access files from them 3. RAID or Non-RAID SATA Expansion Card The SAS SATA expansion cards are top-of-the-line. They are utilized by professionals and offer excellent downstream and upstream bandwidth. Also, many of them tend to come with a hardware RAID controller. You’re likely to find them being used by professionals and enterprises.