Any writing will just frustrate the user no end in its subpar performance. I can only say AVOID these cards for RAID5, unless you have a say a video server where only reads are done.
IBM SERVERAID M1015 VMWARE ESXI 5 SOFTWARE
Looking at the LSI spec sheet for both the LSI2008 and LSI2108, the controller is Hardware assisted software RAID, I would have though better performance from it. BUT when it comes to writing data to the disks, the performance is terrible to say the least. LSI9240 Raid 5 on the other hand did very well in the read tests, obviously the LSISAS2008 ROC can suck the data of the disks all 4 at once. Also the LSI9240 ofcourse needs no CPU help to do it’s RAID functions as can be seen the HDTach charts, where Intel relies solely on the CPU to do calculations.Īnother revelation is the very lackluster performance of the Marvell 9128, really a joke calling it self a SATA3 controller, the SATA 2 Intel controller ran circles round it. As currently the P55 Chipset can only run at SATA2 speeds at 3Gbps max throughput. Intel will be able to overtake these figures once their chipsets support more than 2 devices at 6Gbps. The Intel P55’s ICH10R was very good at the higher queue depths, but the IBM M1015 in LSI 9240 mode was king of overall speed. Looking at the above the RAID 0 performance is very respectable, the bottom charts are of the OCZ Solid 3 by itself on the controllers, from the LSI9240, Intel ICH and Marvell 9128 Adding more drives to the array scaled the performance very nicely, as four SSD’s nearly achieve 4x single drive performance in RAID 0. I also tested the Intel ICH10R controller on the ASROCK Motherboard, as this can take 6x SATA drives, I did not test the Marvell 9128 also included on the Motherboard as this can only take 2 drives. I tested with 4 of the better known benchmarks to give an overall view of how they perform: HDTach, Atto, AS SSD, and Anvil, each does a particular thing well, so with 4 of them I hoped I covererd all bases. I used them in either 4 drive RAID0 for maximum speed or 4 drive RAID5 for redundancy and check the parity generating speed of the LSI SAS2008 ROC. To test the throughput of the M1015 I attached 4x 60GB OCZ Solid3 SSD’s (SATA3, 6Gbps), these are rated at 450MB/s write and 500MB/s read. 4x OCZ Solid3 60GB SSD (Firmware v2.15) SATA3 (6Gbps).MegaRAID Storage Manager Software v11.06.00.03.00.nVidia Geforce GTX465 (modded to GTX470).The below performance results were made with the following setup: IBM ServeRAID M1015 Part 3: SMART Passthrough on the LSI 9220-8i.IBM ServeRAID M1015 Part 2: Performance of the LSI 9220-8i.IBM ServeRAID M1015 Part 1: Getting Started with the LSI 9220-8i.There are now a few parts to this piece including: If you do encounter problems, you are solely responsible for those consequences. I do want to note that these modifications are not endorsed by this site, LSI, IBM or others and the information herein is purely for educational purposes. He has been a regular contributor in the STH forums and has been detailing his learning in threads such as these.
IBM SERVERAID M1015 VMWARE ESXI 5 SERIES
This series of articles was written by Pieter Schaar perhaps best known as the one behind. With the low price on places such as ebay ( see here for an ebay search for the M1015) and an enthusiastic community that has learned to unlock many features, it has quickly become a go-to choice for low-cost SATA III connectivity.
In its native form, it is a very capable host bus adapter (HBA) based on the LSI SAS2008 chip. One of the most popular SAS 6.0gbps/ SATA III controllers for enthusiasts is the IBM M1015.