This NAS has been slow since its release. For a “High Performance”, “Ultimate Reliability” moniker to be emblazoned on it is pretty much fiction.
From a network benchmarks perspective. This unit is ranked absolute last since its launch when compared to all 4 bay units. It only rises a couple spots at #51 out of all 59 NASs reviewed. Even its newer EX2 sigbling is perfomring better on simmilar hardware and is placing at #42 of the 59. (Maybe the EX4 team can borrow some of thier developers?) (or if they are the same and just got lucky, maybe they need to do a code compare.)
Quoting source from “Small Net Builder” provides some interesting observations:
"I created the table below to compare the EX2 with Buffalo’s LS421e, Buffalo’s LS420, and Synology’s DS214se. All four of these devices are powered by the MarvellArmada 370. All are running at 1.2 GHz except the Synology DS214se, which is running at 800MHz.
The Synology is also running with another hardware handicap - it only has 256 MB of RAM, while the other three devices all have 512 MB. Also, for comparison, I included the EX2’s siblings, the EX4 as well as the original My Cloud. All performance reported in MB/s.
Columns: WD My Cloud | WD My Cloud EX4 | WD My Cloud EX2 | BuffaloLS421e | BuffaloLS420 | SynologyDS214se
File Copy Write
File Copy Read
RAID1 File Copy Write
RAID 1 File Copy Read
USB3 Backup - FAT
USB3 Backup - NTFS
Table 2: Performance Comparison
Several interesting results pop out of this table.
- The EX2 File Copy Write is slightly better than the EX4 and is in line with the rest of the Marvell Armada 370 NASes.
- At 64.2 MB/s, EX2 File Copy Read is significantly slower than the other Armada 370 based devices with Buffalo’s LS420 running almost 58% faster (101.3MB/s).
- While RAID 1 File Copy Write results were fairly well clustered, again, the EX2 was at the bottom of the pack with 85.5 MB/s for RAID 1 File Copy Read. Apparently Synology’s slower clock speed and half the RAM didn’t hurt its performance too much.
- The EX2 outperformed both the EX4 and the DS214se for iSCSI reads and writes.
- The EX2 also outperformed the EX4 as well as the LS421e for both USB 3.0 backup tests."
And this is not even taking into account all the bugs we are seeing that impact those numbers. Real world it often different than benchmarks. In this case real world is a lot worse. (understanding of course all units have bugs.) (these just feel major and to some earlier comments, a device in its infancy.)
(table had invalid HTML, so didnt copy right. I broke out what columns are in top line and rows below it. (Ex4 is the second column.))