It’s time for a small update – the previous post is available here: https://blog.thomasmarcussen.com/new-lab-home-datacenter/
The datacenter has been running for about a week now – quite good…. but…..
I’ve been using the Samsung USB as OS drive – Samsung USB 3.0 Flash Drive FIT 32GB
It does have fast read, and a not that slow write, according to Samsung: Up to 130 MB/s
The week passed with setting up and installing VMs – using the actual VMs etc.
But when installing Windows Updates on the Hyper-V host, installing Features/Roles or anykind of configuration, it seems to slow down to useless/freeze.
Running a full Windows Update took about 2 days to reach fully patched level.
During that time it was useless as in no respondig.
I ran a WinSat drive test on the Samsung USB Flash Drive:
Random 16.0 Read: 8.87 MB/s
Random 16.0 Write: 5.45 MB/S
Random reads and writes seems pretty low.
The sequential seems a bit better:
Sequential 64.0 Read: 76.89 MB/s
Sequential 64.0 Write: 86.95 MB/s
The Commands used with winsat:
Winsat disk -drive C: -ran -write (Random 16.0 Write)
Winsat disk -drive C: -ran -read (Random 16.0 Read)
Winsat disk -drive C: -seq -write (Sequential 64.0 Read)
Winsat disk -drive C: -seq -read (Sequential 64.0 Write)
So I decided to replace to Samsung USB 3.0 Flash Drive FIT as a OS Drive.
The new hardware choosen ended up being:
1 x StarTech.com USB 3.0 to M.2 SATA External SSD Enclosure with UASP
1 x Samsung 850 EVO M.2 2280 SSD – 250GB
NOTE: the StarTech.com enclosure does not support NVMe, so did choose a m.2 SSD.
I know that StarTech also have USB 3.1, but i really do want to keep the USB 3.1 port free for an additional RAID enclosure when/if needed. Properly a StarTech enscloure but not sure yet.. (USB 3.1 (10Gbps) External Enclosure for Dual 2.5″ SATA Drives) still looking for a nice USB 3.1 enclosure that supports m.2 NVMe…
Samsung states the specs for the new disk as:
- Up to 500MB/s Sequential Write
- Up to 540/s Sequential Read
The actual performance test on the Samsung 850 EVO M.2 2280 SSD:
Random 16.0 Read: 276.51 MB/s
Random 16.0 Write: 271.37 MB/S
Sequential 64.0 Read: 388.85 MB/s
Sequential 64.0 Write: 383.71 MB/s
So in any case it’s quite a performance boost for the OS disk.
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