Tag: storage

Storage Spaces vs. ZFS

Prelude It’s time for the big showdown! In this post I continue with my benchmark frenzy and after messing around with ZFS I put those SSDs to the test with FreeNAS. The most interesting part will be, of course, to see how those stand against Storage Spaces. On FreeNAS (FreeBSD) there’s no ATTO Disk Benchmark, […]

First Look at ZFS & FreeNAS

ZFS Before finalizing our SSD storage I really wanted to give ZFS, and more specifically, FreeNAS a go. ZFS is particularly interesting because of its awesome performancy with its parity implementation dubbed RAID-Z. Basically, the Sun (now Oracle) guys came up with some clever ideas that greatly eliminate the performance hit that kills the regular […]

iSCSI SAN with multiple NICs

Preface When you’re dealing with SSD storage, chances are, a single network interface is just not enough. No, not even 10GBE is. In fact, with our current 24 SSD array we actually need at least 70 Gbps (yes, you’ve read it right) to fully utilize it. I can’t even put as many cards in the […]

Storage Spaces Performance Woes

So after being quite happy with the SSD performance of Storage Spaces, it turned worse. I realized this by accident, but now it seems persistent. After reboots, SS performance randomly drops to a very specific level, i.e. it’s the same low values every time it happens. The only workaround is to keep rebooting until performance […]

Storage Spaces Performance Analysis – Part 3

After part 1 and part 2 of this series, it’s time to wrap things up – at least for now. Let’s see some SSD benchmarks! This time the test specs go like this: Intel R2224WTTYS 2 x Intel Xeon E5-2630 v3 64 GB Kingston DDR4 LRDIMM 2133 MHz Q4 RAM 2 x LSI 9300-16i HBA […]

Storage Spaces Performance Analysis – Part 2

In part 1 I went through the basics, now it’s time to get a bit more exotic. I promised to do some SSD testing, but first I had to check out performance when things are virtualized. The setup’s pretty much the same as before. I only did the fancy charts for RAID5, but it’s quite […]

Storage Spaces Performance Analysis – Part 1

Preamble We’re building a new company from the ground up and I’ve decided to go the software way in regards of storage. We’ve used to be using LSI MegaRAID but the experience was less than stellar. Performance is fine, but random driver failures caused a fair amount of trouble during the years. I also have […]