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

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2
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2answers
382 views

SSD goes undetected/offline unless cold/hard booted

I've had a SSD for a little over a year on a sever. And once in a while, the server will bluescreen/be completely unresponsive. I've found out that it's the SSD going offline while the system is ...
1
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2answers
260 views

ASP.Net Webapp no performance improvement with huge server update

i am running an ASP.Net webapp on a dedicated server and recently made a significant update to the server hardware. To my surprise there is absolutely no performance increase. old server: single xeon ...
0
votes
2answers
277 views

Recommended filesystem, mysqltmp and filesystem related settings for a mysqld box running ssd + BIG ram + linux?

What is the recommended filesystem + mysqltmp location when dealing with a ssd based system that has some ram to spare? Currently we run our mysqltmp folder on a 4gb tmpfs partition. Works great. But ...
7
votes
1answer
409 views

Background discard on swap partitions on Linux + SSD

Problem I want to enable background TRIM operations on a swap partition within a SSD disk on Linux. According to several articles, e.g. this one, the kernel detects this configuration and ...
3
votes
1answer
526 views

flashcache with mdadm and LVM

I am having trouble setting up flashcache on a system with LVM and mdadm, I suspect I am either just missing an obvious step or getting some mapping wrong and hoped someone could point me in the right ...
2
votes
1answer
572 views

Should I enable “Patrol Read” on SSD drives?

LSI, Intel and Dell RAID controllers (perhaps others) have a "Patrol Read" feature to try to spot when a drive is failing before it completely fails. LSI seems to disable patrol read on SSD by ...
1
vote
1answer
74 views

6 times slower disk write in RAID10 on Ubuntu 14.04 after rebuild

OS: Ubuntu 14.04 LTS Software Raid 10: 4x120Gb Intel 530 SSDs Initial tests: 1.2 GB/s Write 5.2 GB/s Read I did some tests to check if everything will go alright with a failed disk: I set as ...
1
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1answer
149 views

100% SSD usage Linux

Every 20-30 seconds my HDD usage goes to 100% (iostat). iotop is showing that [flush-8:0] is using 99% HDD during these times. In between HDD usage is 1-10%. iostat output: 04/22/2013 08:58:44 AM ...
1
vote
1answer
531 views

IO-intensive processes hang with iowait, but no activity going on

I have a bunch of IO-intensive jobs, and to boost performance, I just installed two SSDs in a compute server, one as a scratch file system, one as swap. After running for some time, all my processes ...
0
votes
1answer
63 views

JBOD or RAID on a streaming server setup

Currently my setup is 1 main server which holds all the mp4 videos and 3 other servers which holds portions of this video. The process is: when a user uploads a video, it is stored into the main ...
0
votes
1answer
103 views

Which partition utility's output is correct?

I have Fusion ioDrive2 785GB (731.088 GiB) SSD card. The server is running Oracle Enterprise Linux 6.4 (RHEL6.4 compatible). It is low-level formatted as such: "80% factory capacity" Format ...
0
votes
1answer
589 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 ...
0
votes
1answer
166 views

Missing files in Windows 2008+VHD+SSD

I have running Windows 2008 Server machine on my SSD disc from VHD file. Today while I was working with Windows the 30% of files disappeared. There are only folders left and no files. I can't find ...
0
votes
1answer
185 views

SSD RAID 0 Setup for database application. What results should I look for?

I guess for database applications Random 4K Read/Write values of the SSD should be the one which should be checked first. The question is how many queue depth should I check? As far as I see Random ...
-1
votes
1answer
131 views

webserver on linode and database on digital ocean

Currently hosting drupal websites on linode using apache + php5 fpm+ fastcgi. Among websites one is drupal commerce(max_execution_time,memory_limit are taken care) and all others are low hitting ...
2
votes
0answers
161 views

Centos 6.5, PXE Boot fails to recognize the SSD device

Goal: Add correct ahci/scsi to my initrd for PXE install of OS. I am using Centos6.5 minimal install ISO. I have a Serial interface only (no VGA), new low cost rangley processor system and need to ...
2
votes
0answers
802 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. ...
1
vote
0answers
12 views

Hbase block locality index is always 0

I have a Hbase (v 0.94.19 with Hadoop 1.2.1) setup with one master machine and two region servers. Each region server has 16 GB heap (6.4 GB cache, 4.0 GB memstore) and 1.6 TB (2 X 800 GB) SSD disk ...
1
vote
0answers
76 views

Running fstrim as cronjob - what happens when interrupted by shutdown

One of the ways to implement fstrim on a file system, it to make a cron.daily task that runs fstrim /. This is preferred over -o discard (mount option) by a lot of people, because the latter can make ...
1
vote
0answers
112 views

SSD+MDRAID+LVM+KVM results in lower performance than expected

We use kvm for virtualization, the disk images are stored as logical volumes. The logical volumes are stored on a bunch of software-RAID1 (mdadm) arrays composed of Intel DCS3500 SSDs (each array is a ...
1
vote
0answers
280 views

Slow disk performance on PowerEdge R720

Every few months PowerEdge with SSD (INTEL SSDSA2BW60) comes with results like: hdparm -tT /dev/sda /dev/sda: Timing cached reads: 690 MB in 2.00 seconds = 344.84 MB/sec Timing buffered disk ...
1
vote
0answers
64 views

mysql - measure amount of write

System : Centos 6.4, PerconaDb/MySQL 5.5.31 Im running relatively small mysql database with some 30 databases, total amount of 12Gb, but heavy on reads, updates and writes (texts, posts, user data ...
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vote
0answers
75 views

Enabling Disk Encryption on DC S 3700?

I have a server running Debian stable with two 100GB Intel DC S 3700 drives in a Linux MD RAID 1. According to Intel, these drives support 256-bit AES encryption and I would like to encrypt the data ...
1
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0answers
39 views

Why my SSDs are in /dev/hdx instead of /dev/sdx on CentOS 5.9?

I have two SSDs Kingston SH103S3240G plugged on SATA ports of my Intel Server Board S3000AH. The SSDs apear like a PATA device (hdx instead of sdx) on my CentOS 5.9. I'm having problems related to ...
1
vote
0answers
323 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 ...
1
vote
0answers
114 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 ...
1
vote
0answers
162 views

Adding SSD boot disk to machine running RAID 10

I have a server (dev rig) that runs Windows 2008 R2 and boots from a RAID 10 setup. Now I want to add an SSD disk that will contain Windows 7 (could be dual boot, but dont plan on salvaging the ...
1
vote
0answers
622 views

VMware Esxi with Kingston SSDNow (No Trim but S.M.A.R.T Garbage Collection)

I recently posted asking whether Trim is supported on VMware Esxi (here) and found out it is NOT. I've read that some SSDs, such as the Kingston SSDNow have hardware garbage collection. Would this ...
0
votes
0answers
26 views

SQL server HA when running with PCI Flash device

I want to purchase a PCI based Flash storage device for our ESXi server hosting our SQL Server machine. We use SQL Server 2008 standard edition. storage is on Netapp via NFS. It is a VM (ESXi 5.1) ...
0
votes
0answers
40 views

How to set relatime for OpenVZ VPses?

I followed the instructions here (http://www.howtoforge.com/reducing-disk-io-by-mounting-partitions-with-noatime) to setup relatime for my host node. I got an error when running the commands under the ...
0
votes
0answers
184 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 ...
0
votes
0answers
832 views

Formatting SD card with yaffs2 (using mtd2block)

An answer to my previous question: Making SD card corruption-proof suggested using mtd2block and formatting the SD card with yaffs2 or JFFS2. I don't really have experience with creating images of ...
0
votes
0answers
267 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, ...
0
votes
0answers
219 views

File-level SSD cache

My windows development environment gets pretty slow sometimes, it's a huge code base. I was thinking of speeding this up by using an SSD, but I want a way to do it while not requiring myself to carry ...