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

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3answers
323 views

Performance of HP SSDs in HP servers

I am trying to find performance data about the official SSDs offered by HP for their servers. I can hardly find any specifications on the HP website or somewhere else on the Web. The device I am ...
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1answer
51 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 ...
0
votes
1answer
27 views

How to properly use the the MegaCli command for a LSI Megaraid Secure erase for an SSD?

I tried the following commands but I keep getting a invalid command error. It seems to properly pick up the correct controller, drive slot, and adapter though. I currently don't have a screenshot of ...
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0answers
11 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 ...
0
votes
1answer
69 views

Benefit of Dell PERC Card for SSD

I bought a dell workstation for using with mysql and python. It came with a single HD and PERC 310 controller. I then installed the OS on an ssd instead to speed things up. However, there seems to ...
2
votes
2answers
146 views

Combining SSD and HDD in HP dl380p?

I´m planning to buy a dl380p with 25 sff slots with 2 ssd:s raid 1 and 10 hdd:s raid 5, having room for 13 more hdd:s in the future. Is this possible or do I need two raid cards?
4
votes
1answer
191 views

How to update SSD Firmware on RAID Controllers

Got some servers with RAID Controllers and SSD. Raid Controller: LSI MegaRaid 9271-4i SSD: Intel 520 The MegaRaid controllers have the ability to update drive firmware using MegaCLI. Intel for ...
1
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1answer
68 views

4096 and 8192 block size read slower than write? by using lsi 9361-8i RAID10

is it possible that 1024 and 2048 block size read speed is faster than 4096 and 8192 block? I'm using lsi 9361-8i with RAID 10 , with 8 x Kingston E50 250G. result: 1024 = Write: 2,251 MB/s ...
3
votes
1answer
109 views

SSD Software RAID Alignment Necessary?

Is it necessary to have the partitions that makeup a software RAID 1 array be aligned? This guide states "Software RAID: Although one needs to pay attention to correct alignment here as well, ...
5
votes
4answers
451 views

SW SSD Raid 1 over HW RAID 10

A provider(data center) recommended I go with 1TB SSDs in a software RAID 1 over HW RAID 10 with mechanical drives. Their quote: Typically SSDs are most reliable than RAID cards and since you ...
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votes
1answer
31 views

Getting ssd, should i keep the ssd cache drive

We are going to install sdd's as main hdd in all of our pc's. However, some of them already have an ssd drive that is beeing used as a cache drive. Should be keep this chace ssd? It was my though ...
7
votes
1answer
410 views

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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1answer
175 views

How can I mount the SSD drive on Amazon's m3.medium?

Amazon's m3.medium instance comes with a 4GB SSD Drive: But I can't seem to find the device using df: $ df -h Filesystem Size Used Avail Use% Mounted on /dev/xvda1 20G 2.9G 16G ...
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vote
1answer
392 views

HP SSD on ProLiant DL360p Gen8 p420i controller - no TRIM?

We have a HP Proliant Dl360 Gen8 server with the 420i 2Gg disk controller. (646905-421) we have a couple of the HP Gen8 200GB 6G SAS SLC SSDs (653078-B21), (they run in RAID1) We run Debian6 on this ...
2
votes
1answer
122 views

Setting I/O scheduler for SSD based RAID array on EC2 instances

I created a RAID array using the 2 local SSD drives on a EC2 c3.4xlarge instance. # mdadm --create /dev/md127 --level=0 --raid-devices=2 /dev/xvdf /dev/xvdg # mkfs.ext4 /dev/md127 # mkdir /data # ...
0
votes
1answer
177 views

Upgrade to 3x Samsung SSD EVO in RAID-0 — what type of RAID controller to search for? [closed]

My current configuration is a RAID-0 with three conventional 2TB hard drives. I want to upgrade to three 1TB SSD EVO disks, also in a RAID-0 configuration. Using SiSoftware Sandra, I found out that ...
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votes
2answers
80 views

Kickstart fails on SSD disk [closed]

Trying to deploy a 2xSSD server (with mdraid level 1), errors on the 1st line: clearpart --all --initlabel --drives=sda,sdb with the message "sda not found". As the SSD is SATA3, shouldn't it be ...
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votes
1answer
124 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 ...
1
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0answers
70 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 ...
0
votes
1answer
65 views

PCie ssds vs raid? [closed]

I am new to the whole SSD thing, but I don't understand how the following works? I need to be very specific for this question to make sense. 1 x LSI MegaRAID SAS 9361-8i 570$ 8 x Ultrastar SSD800MH ...
0
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1answer
60 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 ...
2
votes
2answers
106 views

Database server (MySQL) on SSD - trim command

I can't seem to find much expert information about using a database servers on SSD with regards to trim. I know I can enable RAID and LVM discard, and use an fstrim / cron job or the discard mount ...
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0answers
108 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 ...
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votes
2answers
114 views

No advantage from SSD boot drive for 24/7 server? [closed]

Since my OS and applications are loaded into memory upon boot, isn't there no advantage from having my OS on an SSD boot drive for a server that is kept up 24/7? I know there are several assumptions ...
0
votes
1answer
351 views

Using SATA III SSDs for ZFS pools

I'm thinking of building a ZFS server optimized for random access (PostgreSQL database). I figured that I have 2 options: Use pools consisting of the Crucial M500 960 GB SATA III SSDs. Enterprise ...
23
votes
2answers
1k views

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 ...
2
votes
0answers
160 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 ...
0
votes
3answers
68 views

Setup replication from one local disk to another local disk ( Ubuntu )

Is there is are some way to setup local replication of the one disk to the another ( Ubuntu ) in the such way that all read operations will be involve only first disk ? Such configuration will be very ...
1
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0answers
267 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 ...
0
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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
1answer
757 views

Is it possible to use SSD for storage on Windows Azure?

There is some marketing-speak suggesting that it may be possible ..: http://gigaom.com/2012/06/05/new-windows-azure-goes-all-ssd-to-one-up-amazon-in-the-cloud/ .. but I couldn't find any way to ...
5
votes
1answer
2k views

Root Device on SSD instance types. SSD vs EBS confusion

I have an AMI that was originally created from a t1.micro linux. The "Root Device Type" of this AMI is EBS (8 GB) and my web application software is "baked" into this root volume. Now I would like to ...
0
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2answers
258 views

Linux : SSD performance tweaking queue

I've allready applied well known mountpoint options for ssd, enabled stuff in LVM for ssd optimisation as well. Now i've ran into a possible challenge. Would it be possible to gather information on ...
0
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2answers
78 views

How to benchmark maxCache 3.0 with SSDs? [duplicate]

We're a software development company and previously outsourced the HW side of business but now we're looking into building our own private cloud. We recently purchased a few servers, one of which is ...
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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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votes
1answer
74 views

How to test is hardware ssd-cache work?

We have server with hardware raid controller (Adaptec ASR71605Q). It has 10 sas HDD, 2 SSD for cache and 1gb onboard cache ram. On server installed ESXi. On ESXi I'm start Linux, create 2Tb disk for ...
0
votes
1answer
85 views

ext4 production ready on kernel 2.6.32 (debian6)?

I've to maintain a production system on debian6 (kernel version 2.6.32). I'd like to use ext4 on a ssd disk (and generally hope to improve performance upgrading from ext3). I can't find any reference ...
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votes
1answer
102 views

SSD life span depends on rewrite [closed]

I want to know the life span of a SSD. Some where i read that If there is more write on the SSD then it will have less life. Is it true? What are the factors mainly effecting SSD life span. Please ...
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votes
1answer
53 views

Processing data faster using ssis and an ssd drive

We have a new local server that processes data using sql server 2008 and ssis. in this server i have dedicated drive to do different things. the c drive is for the os and software. the d drive is for ...
1
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0answers
73 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 ...
0
votes
3answers
195 views

Does software RAID-0 really improve performance?

I am going to lease a server and I have two options, SATA or SSD, I decided to save the money and go for the SATA option. But I do not need all that storage they are giving me! So I thought MAYBE I ...
1
vote
1answer
1k views

How can I use full 32GB of SSD in my c3.large EC2 instance?

I have created an c3.large instance using amazons default image "amazon-linux-centos-64-bit (ami-673af20e)". When I set it up I created a root volume of only 8GB. So theoretically I should be able to ...
0
votes
1answer
64 views

How to setup log and data files on SSD for SQL Server?

I'm setting up my production SQL server. I have two 800GB SSD disks available to me (for Windows and SQL Server). Where should I put databases' data and log files? How many tempdb files should I ...
5
votes
1answer
533 views

Proliant ML310e Gen8 Smart Array Predicted Failure Issue with SSD

This is a question related to this one: Third-party SSD solutions in ProLiant Gen8 servers but not covered by the question or the answers. I have an OCZ 120 gig SSD as system drive on a Proliant ...
3
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2answers
142 views

Age replacement policy for hard disks and SSDs at servers

I'm planing an age replacement policy for our storage and servers. Most of them are for DBs and some for images (static content) so yes, they have an huge I/O everytime. Also, we use Samsung 840 Pro ...
8
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2answers
2k views

SSD (Intel 530) read/write speed very slow with RAID 10

Explanation: We have a Server: Model: HP ProLiant DL160 G6 4 x 240GB SSD (RAID-10) 72GB DDR3 RAM 2 x L5639 HP P410 RAID Controller (256MB, V6.40, Rom version: 8.40.41.00) SSD drives are 4 brand ...
3
votes
1answer
150 views

FreeBSD 9.2 shows SATA3 drives as SATA2

I'm running FreeBSD 9.2 on an Intel S2600GZ server board with 4 Intel SSDs. Both the server board as well as the disks are SATA3 capable. However, FreeBSD seems to think they are SATA2. Nowhere in ...
10
votes
3answers
998 views

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 ...
3
votes
1answer
506 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 ...
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2answers
260 views

How do I verify that my hosting provider gave me SSDs?

I searched and found 2 options, none of which I'm confident provided me the answer. 1: cat /sys/block/sda/queue/rotational This output '1' to stdout. What does this mean? 2: lshw -class disc but ...