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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1 answer
54 views

How to clear disk read cache? [closed]

For performance testing I need a way to clear all disk read caches, since rebooting takes time. Clearing the Windows managed cache clearing OS cache is not enough in my case. I want to measure ...
46 votes
6 answers
42k views

Measuring 'total bytes written' under Linux

We're quite interested in exploring the possibility of using SSD drives in a server environment. However, one thing that we need to establish is expected drive longevity. According to this article ...
0 votes
0 answers
32 views

bcachefs - how to setup a ssd only volume

I stumbled across bcachefs a few days ago. After some research, I still have a few questions. As I understand it, only the foreground_target must be defined. Does it make sense to set up a ...
0 votes
1 answer
1k views

How do you generate a new encryption key for a drive that uses SED (Self Encryption Drive)

So I'm currently learning more about NVMe drives that ship with a feature called SED (Self Encrypting Drive). Take the Samsung 970 EVO for instance. It clearly states that it features SED. The 970 ...
20 votes
3 answers
126k views

How to unlock an SSD disk with hdparm?

I have an SSD disk with password protection, but the password was lost long time ago... so I tried to erase the ATA security with the hdparm command. With "hdparm -I", the disk information ...
7 votes
2 answers
7k views

Unit for Total_LBAs_Written in SMART data

I have 3 machines with disks (actually, SSDs) in RAID1, purposely with different brands in an attempt to make it improbable to loose them both simultaneously due to wear-out. They are functional. They ...
2 votes
1 answer
119 views

I/O errors during BLKDISCARD on Linux Dell R720 with SAS Seagate Nytro

I have a Dell R720 with PERC H310 Mini (LSI 2008 MegaRAID) controller which I have just loaded with 4 new Seagate Nytro XS1600LE70045 1.6TB SSD, configured as individual disks for Linux software raid. ...
0 votes
1 answer
88 views

Do SSD still need supercapacitor today ? (NAS : Linux + MDADM + EXT4)

I'm planning to build a SSD based NAS, with Linux / mdadm / EXT4 (so, no ZFS or Btrfs). What happens in case of a sudden power loss ? There are a lot of posts out there stating that we should buy SSDs ...
1 vote
1 answer
680 views

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....
10 votes
1 answer
7k views

Poor iSCSI performance with SSD disks and 10 Gbe network

iSCSI Target Ubuntu 14.04 (Trusty Tahr) with 16 GB RAM and 16 core CPU as LVM backed iSCSI target using three Samsung SSD disks, each capable of doing 65k IOPS using an LSI 6 Gbit/s ...
0 votes
0 answers
103 views

HPE DL360 Gen10 with Samsung 990 PRO NVMe - Really poor performance

Yesterday, I installed a Samsung 990 Pro NVMe in my HPE DL360 Gen10 using a Glotrends PA09-HS M.2 PCIe 4.0 NVMe X4 adapter. Unfortunately, it's not performing as expected. I'm only achieving a write ...
33 votes
10 answers
23k views

Reliability of ssd drives

The main advantage of SSD drives is better performance. I am interested in their reliability. Are SSD drives more reliable then normal hard drives? Some people say they must be because they have no ...
0 votes
1 answer
11k views

Ceph hardware sizing calculator

I would like to calculate the Hardware sizing for a ceph cluster. There are so few references to the sizing, that I try to get these details here in the community. E.g. what shall i have depending on ...
2 votes
3 answers
2k views

Install an NVMe SSD on a Dell Precision 5820 tower

I have a Dell Precision 5820 tower that came with 2 NVMe SSD disks on the FlexBay (the front compartment). I have been talking to Technical Support in my country (Spain) to find out how to install a ...
1 vote
1 answer
166 views

change disk cache settings on Samsung PM9A3 via nvme-cli

I will be running Proxmox guests on a ZFS volume consisting of Samsungs PM9A3 NVME drives. I read here for ex. it might be an advantage in performance to keep the cache of those drives active. So I ...
16 votes
4 answers
30k views

How to measure total writes performed to SSD in Linux?

I've searched the internet to find a tool/utility which can tell me the total writes performed to an SSD (or a normal disk). The output should look something like this: SSD Intel 320S :- Total data ...
2 votes
2 answers
5k views

Instruct Hetzner installimage to use SSD as primary OS drive

Purchased a dedicated Hetzner server with 2x small SSDs and 2x large HDDs paired with hardware RAID. Running installimage from Rescue OS shows this as config: # Adaptec RAID (LD 0): no name DRIVE1 /...
3 votes
3 answers
2k views

How does SSD meta-data corruption on power-loss happen? And can I minimize it?

Note: This is a follow-up question to Is there a way to protect SSD from corruption due to power loss?. I got good info there but it basically centered in three area, "get a UPS", "get better drives",...
0 votes
0 answers
156 views

Proliant ML10 gen9 SSD upgrade

I have a proliant ML10 gen9 with windows server 2012 r2 foundation installed. The system has a software raid 1 setup (intel rst) with two 1tb HP sata hdds and has started to run very slow. I am ...
4 votes
2 answers
718 views

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 ...
1 vote
0 answers
255 views

/dev/sda Currently unreadable (pending) sectors alert but smartclt shows everything as 0

I already read the similar questions but mine seems to tell a different story or the answers there don't work for me. SMART error (CurrentPendingSector) detected on host Device: /dev/sda [SAT], 1 ...
4 votes
1 answer
200 views

Unable to get my rsync of my software RAID 6 past 40MB/s. Looking for suggestions

Wondering what I could adjust to get my RAID 6 Software Raid to resync quicker. Currently it's proceeding at max of 64MB/s and averages to something around 25MB/s. Hoping to get it to 200MB: [...
3 votes
2 answers
3k views

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 ...
-1 votes
1 answer
164 views

Convert from Spinning drives to SSD on PERC H700 RAID 1

I have a Dell R510 running a PERC H700 Hardware RAID controller, with 2 2.5" 1TB HDs in a RAID 1 configuation for the OS, and 12 3.5" 2TB HDs in a RAID5 config for a data filesystem. I have ...
0 votes
1 answer
153 views

SSD Configuration choices for a 2-Way-Mirror Software RAID

I want data redundancy for my SSDs, and so would likely be using a software RAID like Windows Storage Spaces in a simple, fully-provisioned 2-way mirror configuration. To minimize the risk of both ...
5 votes
2 answers
22k views

Does any PCIe slot support NVMe SSD's automatically or do I need a specific M.2 slot?

I have been trying to dissect the information I find with googling, but have come to the conclusion that I cannot find with certainty the answer to the following questions: Given you know the basics ...
0 votes
0 answers
51 views

Does HP DL120 G9 support SSD?

I have some HP DL120 G9 with 4 x 3.5" HDDs that I want to upgrade to SSDs. HP sells 3.5" SSDs, for example EAN 190017545103. Does the DL120 G9 support this drive or what options do I have? ...
1 vote
1 answer
3k views

Unlock SATA SSD locked with Dell's HDD password option in BIOS

Latest problem is a locked SATA disk. It is a Samsung 870 QVO SSD. It has been locked a long time ago with the Dell BIOS password utility. But because an admin password was set, the system never ...
7 votes
2 answers
11k views

Hetzner's installimage script, RAID1 hard drives + SSD

I just purchased a server from Hetzner, with two 4TB hard drives and one 1TB SSD. I want to setup the two hard drives (/dev/sda & /dev/sdb) in RAID1 and install the OS on them, and have the SSD (/...
1 vote
1 answer
86 views

Replacing a single SSD in 4 disk mixed software RAID 1 & RAID10 system

I'm about to replace a single SSD in a 4 SSD RAID 1 & RAID10 system. My webhoster will only do the drive replacement, but not help with adding it back to the array after. I've not done this before,...
2 votes
1 answer
120 views

File access on SSD array suddenly slowed down; TRIM appears to be unavailable. How to enable, or what else could it be?

We have a system that's used for a GIS database (with Postgres as the underlying engine) which is using a software RAID 5 array of 4x2TB Samsung EVO870 SATA SSDs as its database drive. There is a ...
1 vote
0 answers
576 views

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 ...
0 votes
0 answers
105 views

SSD Software-Raid-0 Ubuntu not as fast as expected

I have an MB ASRock B650 Phantom with two SSD 1TB Samsung 990 PRO m.2 PCIe 4 drives. I set them up in a software Raid-0 with lukscrypt on Ubuntu. The SSD should reach 7.450 MB/s reading, in my naivety ...
1 vote
1 answer
684 views

PowerEdge430 - BIOS can detect SSD, but OS installer cannot

I have a Samsung SSD 860 EVO 2.5" SATA III 500GB which I'm trying to use as the OS installation drive for a newly-acquired PowerEdge R430 with 8 2.5" drive bays. I've installed the drive in ...
2 votes
2 answers
190 views

RAID10 on SSD drives

I can't find information about using SSDs in RAID10. If I want to build RAID10, should I create RAID partition in 80% of total drive size on each drive?
6 votes
1 answer
5k views

SMART - Understanding Offline Data Collection

I have two Kingston A400 120GB SSD as cache in a Synology NAS, which don't seem to support automatic offline data collection. # smartctl -d sat -c /dev/sdc | grep -i "Auto Offline data collection" ...
0 votes
1 answer
664 views

HP DL360 Gen 8 not recognizing SSDs

I have HP DL360 Gen 8 Server with P420i controller. I've populated it with 4x1TB HDDs and 2x1TB SSDs. HDDs are recognized correctly and they are visible in controller configuration tool (smart array), ...
5 votes
1 answer
4k views

Cannot remove mount option "discard" on an ext4 file system

I tried to turn off TRIM ("discard") on my ext4 filesystem, but I did not succeed. I tried to add nodiscard option into /etc/fstab, but I can still see this: # tune2fs -l /dev/md2 | grep ...
3 votes
3 answers
367 views

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....
5 votes
4 answers
2k views

Cloning data from a damaged SSD

The SSD went into read-only mode, so you need to move the partition to a working SSD, but I encountered the fact that the LVM size is different: #lvm pvscan PV /dev/sdc3 VG pve lvm2 [&...
1 vote
2 answers
1k views

Resetting SMART on an SSD (hours powered on)

We've been bitten by a known issue on SanDisk SSDs (Dell or HPE branded) where they hard fail after a certain number of hours powered on - 32768 or 40000 depending on the specific model. Is there a ...
1 vote
1 answer
345 views

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 ...
0 votes
1 answer
1k views

Why is ceph is not detecting ssd device on a new node?

I have installed a ceph cluster (quincy) with already 2 nodes and 4 OSDs. Now I added a 3rd host running Debian (bullseye) to the cluster. The new host is deteced correctly and runs a mom. The problem ...
1 vote
2 answers
2k views

Raid in SSD issue with Trim

Yesterday I posted a question about Storage Spaces and ReFS about cache turn off (write through mode) and it's settled. I thought it will be simple, but it turns out far from simple and ran into ...
-2 votes
2 answers
816 views

whats the difference between 1lane and 2lane with SATA-3 speeds? [closed]

I read the beauty of PCIe is that a designer can combine two, four, eight or sixteen of PCIe lanes into a single data port. 2.5 Gb/s PCIe×1 5 Gb/s PCIe×2 I have two sata 3 drives that I want to ...
1 vote
0 answers
137 views

Adaptec ASR-6805T can create raid from ssd only?

I'm about to move my Proxmox home server from NAS to RAID 10. I'm a hardware RAID fan, so I chose a solution among inexpensive old controllers. In the course of studying budget solutions for the home, ...
4 votes
1 answer
296 views

Electrical compatibility of SFF-8643 for U.2 SSDs

I notice a lot of U.2 adapters on sale, seem to show what looks like a U.2 to SFF-8643 cable, or SFF-8643 PCIe connector/adapter, instead of the expected U.2 to SFF-8639 cable or SFF-8639 PCIe ...
3 votes
2 answers
1k views

slow performance on ssd when using kvm to launch vm's

On my host hardware I have 1G's speed on my vm I create using kvm it drops to around 20MB's My host is running ubuntu 22.04 LTS How can I optimise this? I am using file based VM's. I created disk ...
0 votes
1 answer
685 views

How to combine an SSD with two HDDs in a RAID1-ish hybrid setup?

Coming from Linux SSD as HDD cache, I'd like to set up an SSD (or rather a partition thereon) as cache for basically a RAID1 of two HDDs. But since the data might remain cached on the SSD for while, I ...
0 votes
1 answer
237 views

Does daily rsync OS backup push SSD drives to its limits?

Since past year I'm using Rsnapshot (which uses rsync) to do my daily laptop Linux Ubuntu OS backup to a local NAS. Some months ago I started having serious problems with the OS stability. It seems ...

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