Tag Archives: RAID

Optane SSD RAID Performance With ZFS On Linux, EXT4, XFS, Btrfs, F2FS


This round of benchmarking fun consisted of packing two Intel Optane 900p high-performance NVMe solid-state drives into a system for a fresh round of RAID Linux benchmarking atop the in-development Linux 5.2 kernel plus providing a fresh look at the ZFS On Linux 0.8.1 performance.

Two Intel Optane 900p 280GB SSDPED1D280GA PCIe SSDs were the focus of this round of Linux file-system benchmarking. EXT4, XFS, Btrfs, and F2FS were tested both on a single Optane SSD and then in RAID0 and RAID1 with two of these high performance drives. Additionally, ZFS On Linux 0.8.1 was tested on this system both with a single drive and in RAIDZ. For putting the Optane SSD performance in reference, there is also a standalone result provided of a Samsung 970 EVO 500GB NVMe SSD with EXT4. In case you missed out earlier Optane 900P benchmarks on Linux from 2017, see them here for this still very competitive SSD. While there are now the 905P SSDs, the 900P models remain available and cheaper hence why going for those when picking up two of them for this round of Linux RAID testing. All of the file-systems were tested using the Linux 5.2 Git kernel and running with their stock/default mount options. The EXT4/XFS/F2FS RAID was tested using Linux MD RAID while the Btrfs and ZFS RAID were using their file-system’s native RAID capabilities.

These two Intel Optane 900p 280GB SSDs were installed within the AMD Ryzen Threadripper 2990WX test system on the ASUS ROG ZENITH EXTREME motherboard, 4 x 8GB DDR4-3200 Corsair memory, Radeon RX Vega 64, and running Ubuntu 19.04 with the manual upgrade to Linux 5.2 Git.

All of these Linux storage benchmarks were carried out using the open-source Phoronix Test Suite benchmarking software. For those curious, next week are also some fresh Bcachefs benchmarks.


FreeBSD ZFS vs. Linux EXT4/Btrfs RAID With Twenty SSDs


With FreeBSD 12.0 running great on the Dell PowerEdge R7425 server with dual AMD EPYC 7601 processors, I couldn’t resist using the twenty Samsung SSDs in that 2U server for running some fresh FreeBSD ZFS RAID benchmarks as well as some reference figures from Ubuntu Linux with the native Btrfs RAID capabilities and then using EXT4 atop MD-RAID.

FreeBSD 12.0 with ZFS and its default configuration was tested on a single disk, ZFS in a striped configuration with all twenty disks, FreeBSD ZFS in a RAIDZ1 configuration, FreeBSD in a RAIDZ3 configuration, and lastly FreeBSD ZFS in a RAID10 configuration.

When switching the Dell PowerEdge R7425 server over to Ubuntu 18.10 and upgrading to the Linux 4.20 kernel, Btrfs was tested on a single disk, in a RAID10 configuration, and in a RAID0 configuration. EXT4 using Linux Software RAID was benchmarked as well on a single disk, RAID10, and RAID0 across the twenty Samsung 860 EVO SSDs. The mount options used were the defaults as were other settings kept at their OS vendor defaults. ZFS Linux benchmarks will come when the upcoming ZOL 0.8 release is available.

Via the Phoronix Test Suite a variety of I/O storage benchmarks were run on this Dell PowerEdge R7425 server with dual EPYC 7601 processors and twenty Serial ATA 3.0 SSDs.