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

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4
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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 ...
4
votes
4answers
566 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 ...
3
votes
1answer
5k 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 ...
9
votes
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
votes
2answers
285 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 ...
1
vote
1answer
789 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 ...
2
votes
1answer
961 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 ...
1
vote
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 ...
-3
votes
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, ...
4
votes
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: ...
1
vote
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 ...
1
vote
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?
2
votes
2answers
6k 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 ...
0
votes
1answer
765 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
2answers
2k 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 ...
-1
votes
3answers
219 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 ...
2
votes
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
votes
1answer
10k 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 ...
3
votes
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 ...
0
votes
2answers
147 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
votes
1answer
889 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
votes
1answer
181 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 ...
0
votes
2answers
699 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
votes
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 ...
1
vote
0answers
117 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
votes
1answer
416 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 ...
1
vote
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
votes
0answers
873 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
votes
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 ...
4
votes
1answer
255 views

Dell 2950 - Can I mix SSD with spindle HDDs?

I have a Dell 2950 with a Perc 5/i controller inside it. I don't want to spark a debate about drive types and which is "better" etc etc. Just simply; I would like to put in 2x Cheetah 15.5k SAS ...
3
votes
1answer
2k views

How do physical disks passed through ESXi perform vs. passing through HBAs?

Context: I have a SAN operating system (Nexenta) that runs on ESXi. It has a couple of HBAs passed through to it already, via VT-d. All of the HBAs for the SAN OS are full (no free connectors). I ...
-2
votes
2answers
3k views

RAID 10 vs RAID 1 SSDs [closed]

I'm considering moving a large database from mechanical disks to SSDs. My initial instinct was to go for RAID 10, but further research suggests that this configuration can significantly reduce the ...
0
votes
1answer
189 views

Multiple SSD's not showing up in ESXi 4.1

The previous configuration for my server was 4x 500GB Drives, 3x 2TB Drives, 1x 480GB SSD and I replace 3 of the 500GB with SSD to look like 1x 500GB, 3x 2TB, 4x 480GB SSD. The previous ...
7
votes
1answer
3k views

Why the performance decrease for an SSD when using Hyper-V?

I've just installed my new M4 256GB on a Windows Server 2008 R2 Hyper-V server. On the host system using Crystal Disk Mark I've got 212 Mb/s as 4k QD32 write performance, but when I create a VHD disk ...
4
votes
1answer
561 views

Is TRIM passed through a LVM-based PV Xen domU to the underlying SSD

Scenario: -- Debian Xen dom0 -- SSD drive setup as LVM PV/single Volume Group. -- Debian pv_ops-based domU setup on LVM logical volume. -- File system inside domU is ext4 with discard option enabled. ...
-3
votes
4answers
4k views

What RAID controller comes with DL360 G7?

I plan to setup RAID10 using SSD drives. What RAID controller comes with the HP DL360 G7? Is it a real Hardware RAID controller? And it is compatible with CentOS Linux? Will SSD be ok in RAID10?
1
vote
2answers
241 views

I have 2 Servers, Use Faster server for Web (IIS) or Database (MySQL)?

I currently have 2 1U rack servers, one running IIS the other MySQL. I'm replacing the database server because the hardware is old. The new server I purchases is also faster than my web server ...
1
vote
1answer
692 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
2answers
196 views

New to Windows Server 2008, can i change system raid

I have bought Windows Server 2008, but I am not sure if I should install it now or wait until I get my third system disc. I currently have 2x 32gb SSDs. I am going to buy another disc, because the ...
1
vote
0answers
174 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
3answers
2k views

Determining cause of SSD failure after 30-ish minutes

We have a 64GB SSD drive in a tower server with a local colocation company. This drive and the enter system was built about six months ago, brand new parts. Until this weekend the SSD/system were ...
3
votes
3answers
2k views

What would happen if I did a raid on a SSD and an HDD?

I am building another server (cheap) and would like to go with a 256GB SSD drive for my boot and data. This will be enough for my needs, but just having one SSD scares me for a couple of reasons. If ...
4
votes
3answers
622 views

Vertex 2 SSD Freezing 60 seconds at a time

I have a OCZ Vertex 2 SSD that I've been using for a few years in a Win2k8 64-bit "Server" (Dell Precision M4300). Every few weeks it gets in a mood during which it temporarily freezes very often for ...
3
votes
4answers
5k views

HP D2700 enclosure and SSDs. Will any SSD work?

I've got an HP D2700 enclosure that I'm looking to shove some 2.5" SSD drives in. Looking at the prices of HP's SSD drives vs something like an Intel 710 and even something less 'enterprisey', there's ...
4
votes
1answer
335 views

Sync SSD to spindle drive using RAID or DRBD

I'm setting up a server with and SSD as the primary drive, and would like to duplicate the data onto a cheaper drive as a block-level backup (à la RAID1). Since I don't want to hobble the performance ...
1
vote
3answers
1k views

How to use 2 SSD disks for best performace?

I am going to format 2 120GB Intel 320 SSD to be used for a high traffic Drupal server. The server had Xeon E1270 CPU and 32GB RAM. I'm using Debian Squeeze 64 bit. Here are my questions: What ...
0
votes
3answers
792 views

What HD/SSD performance benchmarks are relevant to SQL Server?

I'm looking to buy an SSD for a SQL Server computer, what benchmarks should I be comparing? High/low queue depth? Random/sequential transfer rates? IOPS?
2
votes
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* ...
2
votes
3answers
1k views

SSD, AHCI and write performance

We've started to deploy SSD drives to our developers workstations. At this moment we're having the unpleasant surprise that the systems using the new SSDs often freeze, with the HDD activity led ...