Lsi Megaraid 9260 Controller Software3/12/2021
With rare exceptions, it winds up in first place in our Iometer database, file server, Web server, and workstation workloads.When you purchase through links on our site, we may earn an affiliate commission.Does your system need eight more ports of connectivity We can answer that.The company markets the card as well-suited for cloud, security, and business applications.
With a street price of approximately 630, the MegaRAID 9265-8i is the most expensive controller in this test, but as the benchmark results show, you get what you pay for. Before we present the benchmark results, lets discuss this controllers technical features and its optional software add-ons called FastPath and CacheCade. The LSI MegaRAID 9265-8i is based on a dual-core LSI SAS2208 ROC, employing an eight-lane PCIe 2.0 interface. The suffix -8i in the product name denotes eight internal SATASAS ports, each of which supports 6 Gbs. Up to 128 physical storage devices can be connected to the controller via SAS expanders. The low-profile card also features 1 GB DDR3-1333 cache, and supports RAID levels 0, 1, 5, 6, 10, and 60. Tuning Tools, FastPath, and CacheCade LSI claims that FastPath can dramatically accelerate the IO operations of attached SSDs. The company says the FastPath feature works with any flash-based SSD, markedly improving the readwrite performance of a SSD-based RAID array by up to 2.5x in writes and up to 2x in reads, achieving 465 000 IOPS. As delivered, this card already had enough horsepower to handle our five-drive SSD array without FastPath installed. The other software option for the MegaRAID 9265-8i is called CacheCade. It enables the use of one SSD as a read cache for an array of hard disks. According to LSI, this may accelerate read operations by a factor of up to 50, depending on the size of the data being accessed, the application, and the use case. We tried this tool out and created a RAID 5 array consisting of seven hard disks and one SSD (the SSD serving as a read cache). ![]() We used a 25 GB data set for our test and achieved 3877 IOPS in the Web server Iometer workload, whereas a normal hard disk-based array was only able to hit 894 IOPS. Performance In a nutshell, LSIs MegaRAID 9265-8i is the fastest SAS RAID controller in this round-up with respect to IO performance. As far as sequential readwrite operations go, however, the controller only achieves mid-range performance, as its sequential performance varies greatly depending on the RAID level you use. In the RAID 0 hard disk test, we see sequential reads of up to 1080 MBs (significantly faster than the competitors). ![]() In RAID 5 and 6, however, the LSI controller is beaten by all of the other contenders, only redeeming itself in the RAID 10 benchmarks. In the SSD RAID test, LSIs MegaRAID 9265-8i posts the best sequential write performance (752 MBs) and is only beaten by the Areca ARC-1880i in sequential reads. If you are looking for an SSD-oriented RAID controller with high IO performance, the LSI controller is a winner.
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