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

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SSD read errors; should I be worried?

An SSD just over a month old is producing read errors in my syslog whenever rsync backs it up: [276877.360221] ata1.00: exception Emask 0x0 SAct 0x1 SErr 0x0 action 0x0 [276877.360226] ata1.00: ...
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1answer
217 views

TRIM persistence across reboots

Let's say we have an ext4 filesystem image we dumped onto an SSD (with dd). After a few mounts we learn that we should use the discard flag to emit TRIM commands to the drive. As it is unclear ...
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2answers
2k views

To SSD or not to SSD? (Virtualization - Xenserver) [closed]

I have several Xenserver boxes running (very well). Most of ours are setup with a RAID1 with two mechanical 7200rpm enterprise sata drives, or RAID10 with 4 7200 enterprise sata drives. The sata ...
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2answers
400 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 ...
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3answers
1k views

Should I put the OS of a game server (Minecraft) onto an SSD?

So, I plan on deploying Minecraft servers. Now, typically for consumers, putting your OS onto an SSD is a smart decision - boot up times are a lot faster. For a server environment though, I couldn't ...
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1answer
426 views

SSD Asserted Errors, Dell server

I have installed Crucial SSDs on a new Dell r620 server. Ipmitool keeps alerting that the drives state is changing. /etc/cron.hourly/ipmisel.cron: 2 | 03/07/2013 | 23:32:18 | Drive Slot #0xa3 | ...
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1answer
4k views

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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3answers
3k 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 ...
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1answer
69 views

Fast storage for a server [closed]

I have created a search engine which is implemented in Java. I want to put this program to a server and test it. My program is very dependent to disk I/O and any improvements to disks would directly ...
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1answer
333 views

8kb block sizes as it relates to different storage layers

I have a PCIe SSD card that uses 8kb block cells. It supports "Virtual Controllers" that can split this drive in half and create LVM RAID0 with 8kb stripe size. On top of that I install a file system ...
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2answers
478 views

What kind of performance overhead with LVM on Fusion ioDrive2 as Oracle DB 11gR2's Flash Cache?

This is a bit wordy, so please bear with me. :) We have a RAC cluster of 3 Oracle 11gR2 servers and purchased FusionIO ioDrive2 PCIx cards for these servers to use as OracleDB's Flash Cache. These ...
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0answers
612 views

SSD Performance under Oracle

I have serious performance issues with oracle running over ssd. I have two OCZ Vertex 3 MAX IOPS drives (firmware 2.15). It runs on a INTEL C600 SATA Chipset. Windows 2008 R2. So the issue is ...
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1answer
532 views

Dell H710P, Non-Dell SSDs, and RAID Failures

As long as a non-Dell drive is recognized by the H710P controller, and I'm able to set it up in a RAID, will RAID errors with regard to the non-Dell drives be reported? I setup a RAID10 (16 x 256GB ...
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1answer
124 views

What errors would be logged if SSD is failing or has failed in RAID 1?

What are the errors, if any, that would be observed on /var/log/messages if an SSD is failing or has failed? I would like to know how such errors would be worded so that it could be picked up by an ...
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2answers
1k views

install third party ssd in ibm xseries x3650 M4

i am in the process of purchasing a new network server, it's going to host SQL Server and Exchange so i would like to have the best possible IO, the ibm SSD i could afford it's the micron P400e, i ...
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2answers
279 views

What is the likelihood of data loss in a failed SSD vs HDD?

It is well documented on Wikipedia that a head crash in a hard disk drive (HDD) may result in some data loss. However, there is not much being written about the different modes of a solid state drive ...
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0answers
206 views

RAID10 (4x SSD) system is super slow for 'dd' and 'find' commands

I have configured two servers each with 32 GByte RAM, 2x Xeon 2.4 GHz, 4x 480 GByte Intel SSD on a LSI MegaRAID SAS 9261-8i controller. They should be identical, however one of them has a very poor ...
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0answers
428 views

Intel S2600CP4 SSD RAID 'corrupts' after a few boots

We've attempted to build an SSD RAID 1 using Intel server motherboards and SSDs a few times, using current and previous gen Intel boards. We can normally get through installing Server 2008 R2 x64, ...
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3answers
158 views

Random crashes on my WIndows server machine

This week I am getting curious random crashes on one of my Windows machines. Crash always ends with BSOD but with random error codes in random system drivers. No record in Event log. So first guess ...
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2answers
218 views

InnoDB on server with 2 SSDs [closed]

I have a server with 2 SSDs. I'm running a LAMP install and have an innoDB database on it. my questions are : 1) would innoDB automatically use both SSDs or would it only use one ? 2) would I incur ...
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1answer
3k views

Why does storage's performance change at various queue depths?

I'm in the market for a storage upgrade for our servers. I'm looking at benchmarks of various PCIe SSD devices and in comparisons I see that IOPS change at various queue depths. How can that be and ...
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4answers
573 views

32 core (each physical core) 2.2 GhZ or 12 core (6 physical cores) 3.0GHZ? [closed]

I am working on a multithreaded application (Forex trading app built on C#) and had the client upgrade from the 12 core 3.0GHZ machine (Intel) to a 32 core 2.2 Ghz machine (AMD). The PassMark ...
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1answer
6k views

Server responds “bus error” to every command

I have a linux machine dedicated to MySQL server with a pretty high load. Today I woke up and was terrified to see that database server is down. I could connect to it via SSH, but it was responding ...
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2answers
1k views

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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2answers
302 views

SSD suddenly full

Today the hard drive of our server was suddenly full. The disk usage always stayed around 50 % in the weeks and months before (old data is regularly expunged from the server). I deleted 10 GB of ...
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1answer
840 views

RAID 10 over RAID 5 when using SSDs

I am considering implementing an iSCSI shared storage array using SATA SSDs instead of the 15k RPM SAS drives we normally purchase. We normally use RAID 10 because of spindle contention with the ...
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1answer
1k views

RAID10 (16 x 256GB SSDs) in PowerEdge R720 for Build Server

I'm trying to put together specs for a top of the line Dell R720 (running Windows Server 2008R2) build server (C#), and I'm unsure what the best hard drive / RAID setup would be. Our space ...
2
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1answer
1k views

Third-party SSD in Proliant g8?

Anyone having success with third-party SATA or SAS drives with Proliant G8's? I know the G7's were flaky and had BIOS issues. We're looking for real-world success stories with particular brands and ...
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2answers
166 views

SSD for database or webpage files? [closed]

I can have SSD for the mysql data files and system or the website files (.php files, images, video). I can not have both because of the SSD capacity I have. What would be best, to make Windows 2012 ...
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1answer
244 views

Raid 1/0 SSD vs 2 x non-Raid SSD [closed]

I have a question about speed performance with two separate SSD drives comparing them to RAID mirror array. I do not like idea to setup RAID 0 with 2 x SSD drives because of high risk of data loss, ...
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1answer
110 views

Is it sensible to use SLC swap as a RAM substitute on a VM host?

I have a few oldish servers running virtual machines but they are limited to 16GB RAM and that limits the number of VMs I can run and the options for RDS. I've added a RAID1 array of two Intel 311s: ...
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1answer
135 views

Exchange and MS CRM on SSD's

I am looking at building a server for a friends business. This would probably be a SuperMicro job to come in on a small budget, 9 series with Sandy Bridge Dual Socket 2011 26xx processors. I'm ...
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2answers
171 views

Check alignment of SSD [closed]

I did a migration of my OS from HDD to SSD on Windows 7 using its backup and restore utility. How can I check if the SSD is aligned properly?
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2answers
7k views

Installing Fedora 17, Error “you have not created a bootloader stage1 target device” [closed]

Installing Fedora 17 on a new computer with the live CD ISO. When I get to the part where I create new partitions for the Fedora Installation I get these errors: you have not created a bootloader ...
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1answer
800 views

Is wiper.sh working?

I'm setting up a server running Ubuntu Precise, and I'm trying to verify if SSD TRIM is working. fstrim is failing: ~ sudo fstrim -v / fstrim: /: FITRIM ioctl failed: Operation not supported So ...
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2answers
3k views

How can I unfreeze an SSD connected to a remote server?

I don't have physical access to the machine, so I can't unplug the drive. # hdparm -I /dev/sda | grep frozen frozen The advice I've read elsewhere is to hotplug the drive, pull the ...
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3answers
222 views

How to arrange 2 SSD with 2 SATA? [closed]

I like to have best io performance as well as good capaciyy and reliability out of a server that hosts a busy forum, which involves loads of static files download. I am wondering what is the best plan ...
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3answers
3k views

PostgreSQL server: 10k RPM SAS or Intel 520 Series SSD drives?

We will be expanding the storage for a PostgreSQL server and one of the things we are considering is using SSDs (Intel 520 Series) instead of rotating discs (10k RPM). Price per GB is comparable and ...
13
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1answer
11k views

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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3answers
4k views

HP P410 RAID + Samsung 830 SSDs + Debian 6.0 - What performance to expect?

I'm renting two dedicated servers from a hosting company. Here are the specs: server1: HP ProLiant DL165 G7 2x AMD Opteron 6164 HE 12-Core 40 GB RAM HP Smart Array P410 RAID controller 2x Samsung 830 ...
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2answers
148 views

database on SSD: data only or the DBM program too?

I plan on moving the data I use for statistical analysis (100-ish Gb) onto an SSD. The data is either sqlite single-file db's, or postgresql-managed data. The SSD is 240 Gb, 550 MB/s read and 520 MB/s ...
0
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1answer
955 views

ZFS SSD Trim and Software Raid 5

I am trying to find if the ZFS filesystem has added support for Trim to Raid 5? I am setting up an SSD array in Raid 5. I also would like to know if there is any good software raid 5 alternatives to ...
12
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1answer
188 views

ssd firmware, linux: updating large batch of drives

I was recently hit with a fatal firmware bug that affected dozens of Crucial SSDs deployed in my datacenter. Many of the affected machines use LSI or other proprietary SAS controllers, which Crucial's ...
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2answers
727 views

Why load increase ,ssd iops increase but cpu iowait decrease?

There is a strange thing on my server which has a mysql running on it. The QPS is more than 4000 but TPS is less than 20. The server load is more than 80 and cpu usr is more than 86% but iowait is ...
6
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2answers
2k views

LSI 9260-8i w/ 6 256gb SSDs - RAID 5, 6, 10, or bad idea overall?

We're provisioning a new production server for our reasonably busy website. Our choice of host have available a 6 drive configuration with a LSI 9260-8i card. My initial thought was to fill all six ...
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0answers
120 views

Considering MySQL on SSD with NTFS and Windows 2008

My company is considering migrating our MySQL data from an HDD array to an SSD, possibly the Intel SSD 520 series. We have a fairly large set of databases, some with upwards of 100 million rows, so we ...
5
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2answers
457 views

Linux software RAID5 on SSD. One SSD 40% more worn out than the others

We have a 6 SSD, RAID5 volume. The SSD disks we are using are Crucial M4-CT512M4SSD2 firmware 000F. We write 100 ~ 200GB data through MySQL InnoDB to the volume daily. The RAID5 volume is only used ...
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2answers
1k views

Why IOPS of SSD on Linux is much lower than Win7? [closed]

I have an SSD installed in a PC. And the test tool is IOMeter. When using Centos 6.3 or Ubunut 12.04, the Random/4K/100% Read/64 Outstanding IO/s test shows about 8000 iops. But when testing in ...
2
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0answers
886 views

TRIM on OCZ RevoDrive 3 on CentOS

I've got an OCZ RevoDrive 3 mounted as / on my CentOS 6.3 box running kernel 2.6.32-220.17.1.el6.x86_64. /boot is on a HDD since OCZ's driver apparently doesn't yet support booting directly to it. ...
5
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4answers
17k views

Pros and cons of installing ESXi on a SSD vs USB flash drive?

I'm debating on doing an ESXi 4.1/5.0 installation on a USB stick or a pair of 32GB SATA II SSDs (RAID1 mirror). According to VMWare's documentation, when ESXi is booting it looks for a 4GB space for ...