Questions tagged [ssd]

Solid-state drive refers to a data storage device that uses solid-state memory to store its persistent data.

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How does RAID0 affect IOPS performance for NVMe SSDs?

I have an application which needs to read large amounts of small and randomly distributed entries from storage. To improve the performance I am considering to install a specialized hardware RAID ...
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Is it a good practice not to use all the disk space for RAID?

I'd like to configure a pair of 4TB SSD drives in RAID1. I consider that when in several years one of the drives fails, and I would want to exchange it, the exact model I have now might be unavailable....
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Are Western Digital SSDs compatible with QNAP TS-469U-RP NAS?

I just purchased a QNAP TS-469U-RP NAS. It is my understanding that just about any SSD will be compatible to work in a NAS, as long as the make and model of all four drives are identical. That being ...
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Upgraded server takes 4x as long to write to disk

I had an application running on Amazon EC2, on a t3.small instance, running Ubuntu 20. There is a database backup operation that runs every 5 minutes, and it took 8ms to complete. I then moved the ...
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Some idiot ran `sudo rm -rf /*` to factory reset a Kemp LoadMaster. How do I restore?

So I recently bought a Kemp LoadMaster. The seller was an idiot and "Factory reset" The machine. But to reset the machine, he logged in as 'bal' and ran sudo rm -rm /*. So when I get the ...
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Disk speed on Azure Virtual Machine Scale Set is slower than advertised

I have an Azure Service Fabric cluster with 5 nodes, baked by an Azure Virtual Machine Scale Set. The size of the instances is Standard_D2ds_v4 with an advertised disk speed of max 3200 IOPS. At the ...
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Optimise Write performance on a RAID array of SSD [duplicate]

We've 8 Samsung 970 Pro 1Tb drives (PCI3) in a HighPoint NVMe RAID Controller, which I want to optimise for write performance at the cost of any other consideration. All of our files will be around ...
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ERROR - Failed to format SSD /dev/nvme0n1p1, error: ERROR: Failed to get model number of '/dev/nvme0n1p1'

I'm getting a failed to format drive error because it seems to be unable to identify the model number? Any tips on how to troubleshoot this? 2022-06-08 18:05:02,800 - diskssdconfig.state - ERROR - ...
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RAID10 Performance on newer hardware slower then RAID5 performance on older hardware?

I am currently trying to figure out a performance issue with a new server compared to a old server. Performance should be better but it's not and I'm having trouble figuring out why. Old server is a ...
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Google Cloud Platform instance creation failure (Invalid value for field 'resource.disks[1].initializeParams.diskSizeGb')

I'm trying to create an instance using GCP. The followings are the specifications (the rest of the settings are set as default): Region: us-west1-b GPU type: NVIDIA Tesla V100 Number of GPUs: 1 Series:...
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SSD IOPS inquire

I have question about IOPS For example is there difference in IOPS if the SSD was ( sata 2.5 or M.2 sata or M.2 M-key nvme ) i know sata interface = 600MB M.2 sata = 600MB m.2 M-Key nvme = 2000MB But ...
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Disk doesn't show any partition table or partition changes

I wanted to clone an encrypted drive to a new drive, so I set up CloneZilla to do a disk-to-disk clone. At the beginning, it said 9 hours to run, so I let it run overnight. The next day, it had 145 ...
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satadimm reliability as the server operating system

I have seen little information about satadimm. I bought a server for a colocation and it came with a viking 400gig satadimm, the first time for me. I thought this was pretty cool, and I was told you ...
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Combining Mix Use (MU) and Read Intensive (RI) SSD in same Raid array

I know you cannot combine mixed drive types in an array eg. SAS/SATA or SSD/HDD. What about identically sized SATA SSD in the MU and RI options? RAID-5: 4x P18434-B21 - HPE 960GB SATA MU SFF SC MV SSD ...
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RAID performance with 10xSSD on an HP P420i [closed]

I am planning to use 10x 8TB Samsung 870 QVO SATA III 2.5" SSD in an HP DL360 G8 server that uses P420i smart array controller. Each SSD has a max of 530 MBs speed in sequential reads. ...
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HPE SSD Slow performance

We are facing a extremely slow server. We are using SSD RAID 6 but cannot seem to find the cause why. After doing some research, it appears something related to the RAID and SSD. Server is HPE Gen 9 ...
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HP SAS SSD drives are locked?

I have 2 HP SAS SSD drives I acquired as part of a bulk purchase of parts. One is HPE Model: DOPE1920S5xnNMRI and the other is HPE Model:ARFX1920S5xnMTRI I have 6 servers here with Raid Controllers. ...
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lvmcache/dm-cache writeback cache full performance

I have a SSD writeback cache in front of a HDD, set up through lvmcache (so a dm-cache). When the cache LV is not full (Data% column in lvs < 100.00%), writes go to the cache device (monitored via ...
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RAID controller detecting SSD as foreign after every reboot

My server, an R610, has been detecting my SSD as foreign after every reboot. It has a PERC 6/i RAID controller, but there's no actual RAID stuff (I just have all the drives as their own VDs). This had ...
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What's the best means to clone the root linux hard drive to a new drive?

I bought a new enterprise grade SSD to replace my Samsung SSD. It was $500, not cheap. Anyway, the purpose is to have a more reliable and longer-lasting root hard drive, since a non-enterprise drive ...
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FIO 17x slower on ZFS than raw device

I have ZFS pool RAIDZ-1 on 4 x 3.84TB SATA3 'enterprise' SSDs. zfs create rpool/fio zfs set primarycache=none rpool/fio fio --ioengine=sync --filename=[X] --direct=1 --rw=read --bs=4K --numjobs=1 --...
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why a fresh ESXI installation only uses half of my SSD storage?

I got a very weird problem when installing ESXi-7.0 U3: My SSD size is 256GB (or 238GB actually, it doesn't matter) But after installation, login to ESXI, it only shows capacity of 110GB! So how comes ...
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Running zfs trim twice on the same pool still takes forever the second time

I have this ZFS pool consisting of two mirrored 1TB Samsung 870 QVO drives, that I've been using for about a year for storing bhyve guest images as ZVOLs. During that time, I've created / messed with /...
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Supermicro - XFS (snumbd6d): log I/O error -5

So, We have a supermicro server with the next hardware configuration: CentOS 7 Softraid (because this supermicro configuration didn't support hardware raid..) / Partition is RAID 10 and the rest one ...
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Hyper-V: Benefit of Putting Virtual Hard Disks and Virtual Machines Folders on Separate Drives

Hyper-V has two folders 'Virtual Hard Disks' and 'Virtual Machines', the first stores the virtual disks themselves and the latter stores settings, snapshots, etc. Is there's benefit of storing these ...
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disks for a small esx-host: ssd raid5 or hdd raid10? [duplicate]

I am about to replace an ESXi host that runs some 20 VMs (mostly idling). Today around only 800Gb is used on an external iscsi-box, raid6 (total 7Tb). The new server will just simply have internal ...
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Can we prevent Windows from marking NVMe drives as removable?

I've noticed recently that when adding NVMe drives to Windows, it has a tendency to mark them as removable. I think this is more likely on "enterprise" NVMe SSDs, at least in my experience. ...
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8 x 15k SAS hdd disk with raid 0 performance vs single SSD disk for database [closed]

Which one has a better performance for database application (e.g. postgres) if we just consider read/write operations speed and not fault tolerance 8 x 15k SAS hdd disk with raid 0 single SSD disk
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Hard Drive benchmarking software giving slow speeds

At my company, we are about to do a major software upgrade, and our contact for this software has given us some benchmarks to hit for our new server that the software will be put on. Specifically, he ...
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10gig link transfer speed slow between dell chassis m1000e blades

I have a dell chassis m1000e. All blades are connected internally with Dellm8024 10gbit switch. I've SSD on blades. However, when i am testing the speed between the blades the maximum speed size is ...
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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 ...
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Ubuntu expand free disk space after RAID change

maybe someone can advise how to expand free disk space to SDA6 part? Before I have used 2x960GB SSD (Hardware RAID1), now I have added +2x960GB SSD and made Hardware RAID10 (1+0). Problem is now that ...
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SAS3 HBA / Backplane Issue

I have the Supermicro BPN-SAS3-743A backplane hooked up to a AOC-S3008L-L8i RAID card in IT mode using a regular mini SAS SFF-8643 to SFF-8643 cable bought from Amazon. When I'm in the HBA bios, the ...
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Raid 1 default disk capacity is lesser than the disk sizes. Any ideas? Intel Raid Storage Technology - Raid from Bios

Here the screenshots I think they explains everything The disks are advertised as 1 TB and the real size of the disks are 931.5 GB I have installed windows server without raid setup for ...
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Hyper-V on Server 2019 - the larger the VHDX file the slower the disk speed

We have a brand new pair of servers for Hyper-V with fast RAID 10 SSDs in 2 arrays. On the host, using Crystal Disk Mark, I get speeds that I would expect like RND64K Q32T12 = 4712.49 MB/S while the ...
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How to setup SSD's in RAID 5 on a MSA2060?

In the near future we want to replace our current MSA2050 with SAS disks to a MSA2060 with 10 SSD disks (HPE, 960GB each). We are going to use RAID 5. Since RAID 5 can go up to 16 disks, we can make 1 ...
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Using two SSDs for Hot-Warm-Cold Caching a HDD on Linux

I currently have a debian-based Linux system that I'd like to optimize heavily. This machine has three different drives: An SLC SSD, a QLC SSD, and a 4TB HDD. I wanted to know if it was possible to ...
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Does IO performance degrade when a SAS SSD is attached with redundancy?

I have some Seagate Nytro SSDs (model xs800le70004), SuperMicro SAS3 JBODs (2C models with redundancy), LSI 9300 SAS3 Cards, and SAS HD Cables (SFF-8644). When the SSDs are attached with both primary ...
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HP ProLiant DL380 G7 (P410i) compatible drives

I have recently been looking to do an upgrade on my server recently by upgrading to using SSDs (2.5 inch). I have done a lot of late night googling and have found that many drives have an issue with ...
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ext4fs: Adding multiple flash storage (SSD) into one LVM volume (one at a time) + resizefs: Is it friendly for the flash storage

In the said use case as the title: The scenario to be, for example: In the beginning, I had one SSD drive with ext4fs, then after the storage was not sufficient, I added another drive by LVM + ...
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bcache fails to attach local ssd as caching device in google cloud

I'm trying to setup bcache in an instance in google cloud using a raid of local SSDs as caching device but everything fails in the attach phase of the process. For testing purposes I created a new ...
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HP P440/2gb RAID controller with Samsung pm1643 for production environment

I'm planning to buy two refurbished servers to run as HA hypervisors. I've found DL380p G9 which features a P440/2gb RAID controller. I also found some new Samsung pm1643 SSDs in very competitive ...
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Is there a benefit to having SSD for OS and spinning disk for VM's

Just about to rebuild a small server which would typically be a couple of 4TB spinning disks in RAID1 to hold the OS and the VM's, for 4TB (x2) the cost is still quite high for all out SSD, but I was ...
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MegaRAID: New SSDs blink red

Last week I installed two new SSDs for a customer. It's an Server 2016 Standard Core with Intel Xeon @ 3.70 GHz, 4x32GB RAM and LSI RAID-Controller 9341-8i. I created a RAID 1 with 2x1TB SSDs via ...
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3 votes
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Dell R630 supported PCIe to NVMe (m.2) adapter and drive?

I can't seem to find any information anywhere about supported PCIe to NVMe (m.2) adapter and a brand of drive that will also work. I am aware third party adapters and drives tend to work with various ...
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md raid5 extremely slow on discard

Hi all md raid experts Running Centos 8 (with all latest updates, kernel 4.18.0-240.1.1.el8_3.x86_64) where I have 3x2T Samsung SSD 860 QVO 2TB in raid5 (to be used as base for some KVM VMs) and when ...
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preventing big HDD's to spinup by using (small) SSD's as cache

I want to build a NAS that is as quiet, efficient and cool as possible. In this scenario, I have the following parts: -4 SATA connections to the motherboard. -2 Hard drives, one is 1TB, the other is ...
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Benchmarking ssd MySQL write performance: sysbench oltp_write_only vs write iops, fio. Madness

I've benchmarked about 10 diffrent ssd devices with sysbench oltp_write_only.lua and I found no coroleation whatsoever between max sustained write IOPS of device (both from specification and from fio -...
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Hyper-V Server SSD vs NVME M.2

I'm quite novice on setting up servers and VMs and I'm trying to setup a simple PC to act up as a server in an office. The requirements are low but I think this is a good opportunity for me to learn ...
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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 ...
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