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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Are SSD drives as reliable as mechanical drives (2013)?
SSD drives have been around for several years now. But the issue of reliability still comes up.
I guess this is a follow up from this question posted 4 years ago, and last updated in 2011. It's now ...
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SSD or HDD for server
Issue
I have read many discussions about storage, and whether SSDs or classic HDDs are better. I am quite confused. HDDs are still quite preferred, but why?
Which is better for active storage? For ...
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Does bigger capacity SSD have longer life due to wear leveling?
I have been told that you can get a longer lifespan of an SSD if you buy a bigger capacity SSD. The reasoning goes that newer SSDs have wear leveling and thus should sustain the same amount of writing ...
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What is the current state (2016) of SSDs in RAID?
There are plenty of resources available online that discuss using SSD drives in RAID configurations - however these mostly date back a few years, and the SSD ecosystem is very fast-moving - right as ...
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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 ...
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What risks are there with mixing SSD models in RAID?
Aside from one type of disk bottlenecking the other, are there any other problems with mixing SSD models in RAID?
My problem is, I need to upgrade the storage in a server with 4x Samsung 845DC EVO ...
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Mean Time Between Failures -- SSD
The Mean Time Between Failures, or MTBF, for this SSD is listed as 1,500,000 hours.
That is a lot of hours. 1,500,000 hours is roughly 170 years. Since the invention of this particular SSD is post-...
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Should I RAID my SSDs?
I have a couple of SATA hard disks RAIDed for safety in my machine, because I'm worried about the drive having some sort of mechanical failure and losing my data. I'm considering switching to an SSD ...
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EBS vs SSD definition
I am confused about the EBS and SSD choice while creating an instance .
while choosing instance parameters (Step 2) you will see 2 options in the column Instance Storage (GB) : EBS only or SSD .
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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 ...
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Do SSDs support SMART?
S.M.A.R.T. (for Self-Monitoring Analysis and Reporting Technology) is a wonderful technology to detect hard drive failure before it really happens.
But is S.M.A.R.T. relevant for SSDs?
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Consumer (or prosumer) SSD's vs. fast HDD in a server environment
What are the pro's and con's of consumer SSDs vs. fast 10-15k spinning drives in a server environment? We cannot use enterprise SSDs in our case as they are prohibitively expensive. Here's some notes ...
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Do I need to RAID Fusion-io cards?
Can I run reliably with a single Fusion-io card installed in a server, or do I need to deploy two cards in a software RAID setup?
Fusion-io isn't very clear (almost misleading) on the topic when ...
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Should you disable the page file with SSD?
I've been reading this question, and it has a lot of great information.
But assuming you have more than enough RAM, I think the page file should be disabled on SSD to extend the life time. I know you ...
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Third-party SSD solutions in ProLiant Gen8 servers
I was wondering if anyone had any specific experience using Intel DC3700 SSDs (or similar) in the HP (DL380p) Gen8 servers?
I'm upgrading a set of database servers that use direct-attached storage. ...
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Linux SSD as HDD cache
I have a Linux server system installed on an SSD and an HDD for user data. As there is space left on the SSD, I want to use it as a read cache for the HDD.
Looking at the possibilities, I found:
dm-...
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For L2ARC and ZIL: is it better to have one large SSD for both, or two smaller SSDs?
Main references
ZFS L2ARC (Brendan Gregg) (2008-07-22) and ZFS and the Hybrid Storage Concept (Anatol Studler's Blog) (2008-11-11) include the following diagram:
Question
Should I interpret the ...
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Scaling databases with cheap SSD hard drives
I hope that many of you are working with high traffic database-driven websites, and chances are that your main scalability issues are in the database. I noticed a couple of things lately:
Most large ...
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Reliability of SSD vs HDD (Over large temperature variations)
I've got an application which requires data recording in a outdoor environment, and I am interested in the reliability of SSDs vs HDD when placed in a cold (down to -20) and hot (+50) ambient ...
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SSD head / cylinder / cluster details
A customer of ours makes industrial robots that run on very old, but stable, hardware and software. The only bottleneck has always been the hard drive in these moving machines. Due to constant ...
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Would SSD drives benefit from a non-default allocation unit size?
The default allocation unit size recommended when formatting a drive in our current set-up is 4096 bytes. I understand the basics of the pros and cons of larger and smaller sizes (performance boost vs....
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Verify TRIM support with BtrFS on SSD
We are looking into using BtrFS on an array of SSD disks and I have been asked to verify that BtrFS does in fact perform TRIM operations upon deleting a file. So far I have been unable to verify that ...
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What are the main points to avoid RAID5 with SSD?
My understanding is that an SSD has a limited amount of writes. RAID5 performs many writes due to parity information across the drives. So reasoning states that RAID5 would kill and lower the ...
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Does a RAID controller with an NV cache improve the performance or integrity of an SSD array?
I am planning to purchase a server (Dell PowerEdge R740) with SSDs in RAID 10, and my priorities are write performance and data integrity. It will be running Linux. The SSDs have write caches with ...
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Possible to get SSD TRIM (discard) working on ext4 + LVM + software RAID in Linux?
We use RAID1+0 with md on Linux (currently 2.6.37) to create an md device, then use LVM to provide volume management on top of the device, and then use ext4 as our filesystem on the LVM volume groups.
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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 ...
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Zeroing SSD drives
We host VPSes for customers. Each customer VPS is given an LVM LV on a standard spindle hard disk. If the customer were to leave, we zero out this LV ensuring that their data does not leak over to ...
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Is there a way to protect SSD from corruption due to power loss?
We have a group of consumer terminals that have Linux, a local web server, and PostgreSQL installed. We are getting field reports of machines with problems and upon investigation it seems as if there ...
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Hardware RAID Controller Support for SSD TRIM
Do any hardware RAID controllers available today support TRIM?
If not, do any manufacturers have target dates for supporting TRIM?
Should I even care about TRIM for SSDs installed in performance-...
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Understanding NVMe storage and hardware requirements
I'm a bit confused about the recent developments in PCIe-based storage, particularly as it relates to the NVMe specification and its hardware compatibility.
While I've worked extensively with SSDs in ...
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Wipe is very slow. Too little entropy?
I have to hand off a Laptop including its hard disc. Since it was not encrypted I wanted to wipe it at least quickly. I know this is not optimal on SSD, but I thought better than just plain readable.
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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 ...
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Implementing Linux fstrim on SSD with software md-raid
I'm currently building a new Ubuntu 13.04 server with 2 256GB SSDs in a raid mirror to run a MariaDB instance. We typically place LVM on top of dm-crypt encryption on top of an md raid 1 array, but ...
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Should I avoid putting two SSDs in a RAID1 configuration due to performance degradation?
I have a workstation system that will have two 64GB industrial SSDs, and the plan is to have both disks in a RAID1 configuration for redundancy which is set up in the kickstart. The system will be ...
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HP storage arrays - multiple channels?
Our SQL server is becoming pretty heavily loaded, and all indications point to the disk channel being the bottleneck. The current HP server has a fairly low-end array card, and we're looking to ...
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VMware ESXi SSD on RAID showing as non-ssd
I am replacing a KVM server with a ESXi server. I just installed ESXi 5.5u1 and added a data store. The new server has 4 SSD drives in RAID 6 using hardware RAID. When I added the data store VMware ...
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SSD, Erase Block Size & LVM: PV on raw device, Alignment
I want to install a new SSD and use the the whole device as a PV for LVM - in other words: i don't plan to put even one partition on this device. So aligning partitions on the erase blocks is not ...
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Force renegotiation of PCI Express link speed? x2 card reverts to x1 width
In an effort to circumvent compatibility and cost barriers to using SSD drives with newer HP ProLiant Gen8 servers, I'm working to validate PCIe-based SSDs on the platform. I've been experimenting ...
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Why is this SSD drive failing with bad sectors, and was it predictable?
Note: this question was previously closed as off-topic. You can read the discussion. My reasons for asking it here are:
This drive is in an offline content cache server for schools in rural Zambia.
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Home-brew automatic tiered storage solutions with Linux? (Memory -> SSD -> HDD -> remote storage)
Related to this question about using an SSD for system and HDD for data, except I would like my system to do this automatically...
Is it possible to have several layers of storage and push items ...
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Quick method to determine SSD drive health?
I have an Intel X-25M drive that was marked "failed" twice in a ZFS storage array, as noted here. However, after removing the drive, it seems to to mount, read and write in other computers (Mac, PC, ...
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How do I effectively destroy a SSD? [duplicate]
What is a repeatable way of destroying SSDs? For example, if i opened it which part could i take out and destroy for just the data(How to identify the actual "storage unit")?
Case 1. Normal user that ...
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Is using 2 solid state drives in RAID 0 going to be reliable?
I am thinking of upgrading from a Western Digital 10k RPM hard drive to using two Intel-X25 solid state drives in RAID 0 configuration. I will be using this for hosting the operating system and ...
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Enable Discards HP 3PAR StoreServ 7400
Spin off from these previously asked questions
How to get free space from mounted drive Redhat 7
Update crypttab asks for Passphrase for fstrim
We have a HP 3PAR StoreServ 7400 with 170 VM's ...
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Is post-sudden-power-loss filesystem corruption on an SSD drive's ext3 partition "expected behavior"?
My company makes an embedded Debian Linux device that boots from an ext3 partition on an internal SSD drive. Because the device is an embedded "black box", it is usually shut down the rude way, by ...
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Potential pitfalls associated with securely deleting SSD disks
I need to decommission two SSD disks from one of my Linux hosted servers.
In order to safely delete data stored in the disks I was planning to use: hdparm --security-erase.
I read this document and ...
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How to determine number of write cycles or expected life for SSD under Linux?
We've been running an SSD (Intel X25-M) in a Linux (RHEL 5) server for a while, but never made any effort to figure out how much write load it was under for the past year. Is there any tool under ...
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Secure Delete on SSD
Will a "traditional" secure delete utility that overwrites physical sectors on a magnetic HDD work on an SSD, or will the SSD simply "remap" the sector to avoid the expensive delete operation and ...
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Does it make sense to install SSDs on server?
I want to build a server hosting about 2TB+ data. Of course SSD is out of the picture in terms of the data drive. My question is: Is there any benefit to use SSDs as the boot drive? I plan to put 16G ...
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Automatically mount SSD instance storage on AWS EC2 in Ubuntu 16.04
I am using an Ubuntu 16.04 EC2 from AWS on c5d.2xlarge HW. It comes with a 200 GB SSD called /dev/nvme1n1.
I am able to mount this drive using:
$ sudo mkfs.ext4 -E nodiscard /dev/nvme1n1
$ sudo ...
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