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Questions tagged [nvme]

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RAID-5 read speed is very slow

I have windows 11 pro for workstation and use 2 RAID-5 volumes for storage (nvme group and ssd group). The read speed for the nvme group is around 2220 MB/s and the write speed is around 170 MB/s. SSD group counts as the same. I tried 128kb, 64kb,…
Burak Kocaman
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Booting specifics on NVMe

I have a problem with transferring my OS from SATA SSD to PCIe NVMe and maybe someone can give me more ideas to solve the next problem. The hardware is HPE MicroServer Gen8 running Windows Server 2022. BIOS. SATA SSD. MBR. I've tried multiple times…
DrKovalex
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How to add to excludes alerts on smartmontool

I faced with problem and hope for your help. Started getting notifications from smart on Debian 10 server: Device: /dev/nvme1, Critical Warning (0x04): Reliability Found that this alert causing because next attribute: Percentage Used: 107% I also…
remuz150
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Erratic SMART readings on one member of a RAID 1 array

I am managing a server that uses 2 nvme ssds on RAID 1 connectivity. At once point I lost access to one of the 2 and got my normal raid array degraded mails from mdadm. So I asked from the hosting company to check it out and they said that the…
escozul
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Why does `hdparm -t` take so long to produce accurate results on my EC2 instance?

I'm profiling a data-processing program that I wrote and I want to understand the theoretical throughput of the machine I'm on. Specifically, I want to measure what disk read speed my g4dn EC2 instance is providing my application. This particular…
cade
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Strange IO activity

I have some strange IO activity on a server and I can't figure our where it's coming from. To provide some background, I had to replace an NVMe (Samsung PM81) from a server due to wear. I didn't notice any performance issues, but SMART reported it…
Alexandre Ramírez
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Mirror Accelerated Parity / NVMe / ReFs / Fast-Tier Issues

I'm currently building a lab server with some cheapish hardware. 2 NVMe SSDs, bunch of 3.5 HDDs. After creating a Tiered Storage (NVMe-Mirror & HDD-parity), formating it with ReFS, everything behaves quite as it should: Using performance-counters I…
dognose
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NVMe SSD poor writing performance on Debian 10

I just went for some disk performance tests on my DIY NAS and noticed some very poor performace results with my NVME disk writes ! My NAS runs Debian 10 with this config : ASROCK X470D4U with Ryzen 5 3600 16 Gb ECC RAM 1 NVME for OS (ADATA x8200…
sbocquet
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NVMe parallel writes

I'm trying to understand better how writing to NVMe can be optimized. I have a process which writes a large amount of data to disk (~100 gb) in one batch job. The data is spread across 100s of files. I have multiple NVMe disks available and will be…
R.Smith
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AWS i3en.3xlarge really low iops

I just launched a new instance ec2 instance of type i3en.3xlarge. Operating system is Ubuntu. I mounted the NVMe Instance store but every speed test I run is incredible low at around 7k iops. What am I doing wrong? Here are the steps I did: 1) Check…
Raphael Noero
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Show free SSD space after TRIM / UNMAP / Deallocate?

For a hard drive supporting ATA TRIM, SCSI UNMAP, or NVMe Deallocate, is it possible to report on the amount of unallocated space? For example, we take a 1TB drive, then write 500GB data to it, then delete 300GB. Is there any command to show that…
PhilR
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Windows storage spaces tiered storage not using nvme drive?

I'm trying to run an Ethereum full node (geth v1.10) with archiving for big data analysis. The storage requirements are expected to be 8TB after being fully sync'd. I have a Synology NAS that is serving 8TB LUN via iScsi (can max around ~120 MB/s…
TheUniquePaulSmith
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Interpreting SMART Logs of Newly Installed NVMe RAID0 Crashing Everyday

An Ubuntu 20.04 system has been stable for a year until a 2nd and 3rd NVMe drive is installed on the motherboard to form a 2x1TB RAID0 array. Ever since then, there is huge amount of IO load on this RAID0 array 24/7 and the system crashes about once…
Nyxynyx
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Read data off Apple NGFF M2

I have one of those propietary NGFF M2 SSDs found in older Macbooks. I bought a converter which is supposed to convert it to a standard NVMe. When I plug it in my Linux box only sees it as a SCSI device. It doesn't show in lsblk and I can't dd…
Shawn Welch
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Since VFRC feature in VMware is now end of lifed, what can I replace it with?

Now that VFRC (vflash read cache) is end of lifed in Vsphere 7, does anyone have suggestions on what I could replace it with. Looks like there is only Infinio and Virtunet in the market now, has anyone tried these or any others?
KVH Hospital
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