Serial Cables has a history of providing a wide range of cabling and specialty items, including fibre channel (cables and FSP's), HD SAS/SATA, SCSI, PCIe, and Infiniband cabling. Serialcables.com also supplies adaptors and accessories, along with wiring diagrams and pictures of all the products they supply. Serial Cables is a certified LSI Channel Alliance Partner and SandForce Trusted Partner, and they are the exclusive North American distribution partner for SerialTek.
Serial Cables provided their inaugural product geared for lab environments and testing applications with their eight-bay 12Gb/s JBOD. In our Serial Cables SA-ENC12G-01A 12Gb/s SAS3 JBOD External Storage Review, we found the JBOD offers a solid platform with quality components.
The success of the eight-port model led to development of larger 24-bay models. Serial Cables is expanding their presence in the market by offering their new SA-ENC12G-024A 24-port Direct Attach JBOD. The JBOD is specifically designed to meet the needs of 2.5" HDD/SSD testing environments, but also works well in production environments, particularly when paired with an expander, or when purchased with optional internal expanders. 12Gb/s SAS requires low-loss and high-quality PCB assemblies due to a requirement for enhanced transmit and receive equalization. The Direct Attach JBOD satisfies these requirements with quality components and internal cabling. The enclosure comes in a 19" 2U rack-mountable form factor.
Serial Cables also offers a larger 24-bay SAS/SATA test box that features individual, and replaceable, interposers. This larger version also offers individual drive power control, and current measurement, via CLI with USB, Telnet, or Ethernet connections. That enclosure provides 800 watts of power, and comes in a rack-mountable 19" configuration.
The SA-ENC12G-024A we are evaluating today is available in two configurations. As a direct attach model there are no expanders, and each drive is accessible via dual-port connections. There is also the option of 48-port 12Gb/s SAS expanders for storage environments requiring expanded high-availability features, and customers can tailor the device for their needs by selecting either one or two 12Gb/s LSI SAS 3x48 expanders for the chassis.
The 12Gb/s backplane leverages SFF-8680 connectors and SFF-8643 internal HD MiniSAS receptacles. For external connectivity, the JBOD provides 12 SFF-8644 HD MiniSAS receptacles. Each drive is addressable in single-port or dual-port mode.
A notable step forward from the eight-port model is the redundant PSUs featured on the 24-port model. These feature two 38X38X28 DC fans per module, and the 48-pin modules are hot-swappable/hot-pluggable. Each module also features its own AC inlet, and is rated for a total output power of 500 watts.
The JBOD features plenty of airflow, along with a rugged design that is well suited for test environments. The Intel lab recently conducted testing for the Intel RAID Performance 12Gb/s SAS RAID Controllers whitepaper with the eight-bay and 24-bay Serial Cables JBODs. From performance characterization to device verification, and even production environments, the Serial Cables Direct Attach JBOD is designed to meet the needs of demanding users. Let's load it up with an array of 12Gb/s SAS SSDs, and test its performance.
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- Page 1 [Introduction]
- Page 2 [SA-ENC12G-024A Internals and Specifications]
- Page 3 [Test System and Methodology]
- Page 4 [Benchmarks - 4k Random Read/Write]
- Page 5 [Benchmarks - 8k Random Read/Write]
- Page 6 [Benchmarks - 128k Sequential Read/Write]
- Page 7 [Benchmarks - Database/OLTP and Web Server]
- Page 8 [Benchmarks - Email Server]
- Page 9 [Final Thoughts]