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

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Which alternative is most performant (raid, ssd, 15k rpm disks)

I'm looking at the DELL PowerEdge™ R720 from Hetzner. This server has a Dell PERC H710 8 Port SAS/SATA 6GBit/s raid controller. I have the choice between: 3 x 600GB SSD (MLC SATA 3Gb/sec) 6 x ...
20
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4answers
2k views

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 ...
2
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2answers
724 views

SSD disk reports ATA errors

Yesterday I got report about SSD ATA errors on one of my hosts. SSD disk is 128MB OCZ-VERTEX4 Firmware rev 1.3 about 8 months old. OS is Ubuntu 11.04 running kernel 2.6.38-16-generic. Motherboard ...
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1answer
59 views

Mounting ssd. Expectations vs reality about server load

I'v installed SSD on my server and moved tmp folder, mysql data folder and 2 most loaded websites(php) on it. I'v expected that server load will fall a little bit, but it seems that it is on the same ...
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1answer
50 views

Mix physical media for ESXi VM, or keep it all on one physical volume? [closed]

Say I have a 120GB SSD and a 2TB volume from a portion of a larger RAID6 array. I would like to spin up a Windows Server VM for purely low-impact personal use that employs a large data store in some ...
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3answers
1k views

SSD Harddisk and linux distro with TRIM support

I have a Corsair Force Series SSD harddrive which I plan to put in a 1 unit linux box as a linux server. The server itself will be making a lot of random reads and very little writes, which makes SSD ...
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2answers
371 views

how to use SSD for streaming videos, while storing on HDDs [closed]

I run a video hosting, youtube like site. I currently run it with 2x3TB HDDs and they max out at 150mB/s I`m willing to achieve higher speeds and I think of storing the data on HDDs and streaming ...
3
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2answers
3k views

SSD on Vmware ESXI 4 (TRIM? Good Idea?)

I just posted about finding bottle necks and have narrowed it down to having way too many VMs on my machine on one 15K SAS drive. I have plenty of cores and plenty of ram. So I am planning on putting ...
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4answers
15k 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 ...
0
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3answers
921 views

Which SSD to choose, when unexpected powerlosses are frequent?

I am working on a embedded system where there can be unexpected power losses. So far it has been using a Corsair F80 SSD with Windows Embedded Standard 7 (NTFS), and after a unexpected power loss ...
0
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1answer
163 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 ...
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2answers
2k views

MySQL moving ibdata & ib_logfile

I'm trying to move ibdata & ib_logfile on ssd drive. I tried this way, but it don't work: service mysql stop cd /var/lib/ cp -ra mysql mysql_backup cp -a mysql/ibdata1 mysql/ib_logfile* ...
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1answer
189 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
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1answer
266 views

Using both expanders in HP D2700

I am considering purchasing an HP D2700 for use with SSDs (Samsung Pro 840's), for use in realtime playback of high resolution images. The D2700 has two I/O modules (which I assume are the actual SAS ...
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1answer
948 views

Disk IO in Linux is slow (2MB/sec) while in Windows its fast (400MB/s) [closed]

I have a server with an ASUS board with a 256GB SSD In Windows, using HDTune my drive shows 400MB/sec on Linux, I'm getting about 2MB/sec using root@desktop:/# dd if=/dev/zero of=/foo bs=1024k ...
11
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1answer
3k 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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1answer
199 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
367 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 ...
2
votes
3answers
891 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 ...
0
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1answer
372 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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2answers
436 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 ...
0
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1answer
316 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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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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6answers
5k views

ZFS - zpool ARC cache plus L2ARC benchmarking

I have been doing lots of I/O testing on a ZFS system I will eventually use to serve virtual machines. I thought I would try adding SSD's for use as cache to see how much faster I can get the read ...
0
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1answer
2k views

Using smartctl to get vendor specific Attributes from ssd drive behind a SmartArray P410 controller

Recently I have deployed some HP server with SSD's behind a SmartArray P410 controller. While not official supported from HP the server work well sofar. Now I like to get wear level info's, error ...
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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 ...
0
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1answer
507 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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0answers
532 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
123 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
258 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
198 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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3answers
140 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
210 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 ...
4
votes
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 ...
4
votes
4answers
563 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 ...
9
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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 ...
0
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2answers
283 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
785 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 ...
2
votes
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 ...
1
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3answers
4k views

Can cloning a hard disk drive to a SSD drive physically damage the SSD or the performance of the SSD?

I have a new SSD drive, I want to use it to replace the old mechanical hard disk drive in a laptop. The laptop had a new O/S (Windows 7 64-bit) installed about 9 months ago and I want to know if it's ...
6
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2answers
4k views

What's in my ZFS ARC and L2ARC caches?

I have a simple ZFS setup at home, four disks mirrored, 8GB ram and 120GB Intel X25-M SSD for L2ARC. I ran zpool add poolname cache cXtXdX then generated load and eagerly tracked the warming process ...
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2answers
164 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
235 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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6answers
9k views

SSD for swap on Ubuntu server

Currently I am reading SSD reviews and I wonder how much exactly I will benefit if I move the 24 GB swap from 7200rpm HDD to SSD. Does anyone implemented swap space on SSD? Is this generally good ...
4
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1answer
101 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
127 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 ...
3
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3answers
2k views

SSD + LUKS performance comparison?

Our laptops and portable drives must be LUKS encrypted. LUKS doesn't really seem to cause much performance loss on normal laptop hard drives (7200RPM) for us. With the crazy data rates you get with ...
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3answers
457 views

SSD drives with SAS Interface

Why there aren't any SSD with SAS interface? Are there any technological limitations or it is simply because manufacturers haven't produced one yet?
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2answers
169 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?