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

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2answers
294 views

Running “find” command generates high load

I run this command on a Debian server with SSD drives configured as RAID 1: ionice -c 3 find . -type f -amin -1440 -mmin +1441 -not -path custom/ -print0 on a path which contains over 1.7M files and ...
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0answers
45 views

MSW2012R2 StorageSpaces + SSD tiering. Unknown Placement Status

I use StorageSpaces with tiering. I have several vhdx images that I want to be constantly pinned to SSD on my tier. I use command: Set-FileStorageTier –FilePath "path" -DesiredStorageTier "tier" ...
1
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0answers
201 views

task fstrim blocked for more than 120 seconds

I'm experiencing random crashes on my system. I've narrowed the problem to the fstrim program that's launched weekly by cron. In the console, I've got a set of blocked tasks among whigetch I find ...
2
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1answer
2k 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 ...
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3answers
2k views

Why is my RAID1 or RAID10 virtual drive (6 SSDs) not significantly faster than a single SSD?

I'm trying to figure out why the performance of a Virtual drive built from 12 SSDs is not really faster than a single SSD drive. The Server is a IBM x3650 M4, two Xeon E5-2643v2 130W 6C 3,5GHz. The ...
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1answer
134 views

How to enable SAS-12 on LSI 9361 RAID controller

By default, this SAS-12 controller runs with SAS-12 SSDs at SAS-6 speeds. How to unlock SAS-12?
0
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1answer
801 views

HP Proliant DL360 G6 Wont Detect SSD

I have a hp Proliant DL360 G6 It has 4 hard drive slots and I have 2 Intel 80GB SSDs and 1 WD 160GB regular hard drive. I have tried the WD in all 4 slots and each time it detects it and boots right ...
6
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5answers
4k 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 ...
1
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2answers
395 views

ncq not supported on an SATA3.0 HDD in an usb 3.0 casing

is there a well known reason why a SATA3.0 HDD supporting NCQ does not have NCQ queue depth configured when mounted from an usb 3.0 case ? output for hdparm -iI /dev/sda shows NCQ is supported output ...
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1answer
140 views

Does filesystem encryption strain SSDs?

For security purposes we are required to implement full filesystem encryption on an upcoming server installation. We use the default encryption settings shipped with CentOS 7. My question: as our ...
1
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3answers
1k views

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: ...
0
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0answers
1k views

smartctl error end_request: I/O error, dev sdb, sector

I have a Scientific Linux 6.5 server with a RAID with SSD disks. I see several error on dmesg file but there is no alert or errors provided by the utilities of the RAID controller (LSI controller). ...
1
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1answer
377 views

Partitioning SSD and HDD in Linux NAS [closed]

There is a computer with four 2.7 TB hard disks, under control of Intel Rapid Storage Technology. And one 120GB SSD. We need to use it to store some data that we are collecting and computing. I think ...
4
votes
3answers
4k views

Why do servers have SAS instead of SSDs? [closed]

I was wondering why do servers still come with SAS disks instead of SSD disks? I know that SAS are faster than normal hard drives but they are still much slower than SSDs. I think they are more ...
1
vote
0answers
314 views

What Kind of adapter can I use for a 2.5" SSD into a Dell PowerEdge R320?

I'd purchased a a caddy like this: http://www.amazon.com/gp/product/B00BR0L3U8/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1 assuming I would be able to front load this into the R320, but when I ...
0
votes
1answer
107 views

Wearing an SSD out with Zero Byte Files

We have a rather large custom in-house application that we are considering moving the configuration files to an SSD drive. In the midst of these configure files we also write thousands of zero byte ...
4
votes
2answers
1k views

Maintenance (TRIM) of SSDs in HW RAIDs

I have 2 ARECA 8040 HW-RAIDs, with 8 SSDs each. One is RAID10 with Intel 520 SSDs, the second is RAID5 with Samsung 840 SSDs. Both are connected to the Server with one shared LSI Logic / Symbios Logic ...
0
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1answer
2k views

Windows Server 2012 and recognizing RAIDed SSDs as an SSD

Problem: Because defragmenting is detrimental to SSDs and decreases their performance/lifespan, its important that modern OS's use TRIM instead of defragmentation. If an SSD is incorrectly recognized ...
1
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1answer
886 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
345 views

Windows Server 2012 not starting when PCIe SSD disk installed

I have Dell Power Edge R905 server with Windows 2012 R2 installed. Everything works great until I install Plextor M6e SSD PCIe x2 card. With card inserted into PCIe x4 or PCIe x8 slot, system starts ...
4
votes
1answer
11k 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 ...
1
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1answer
510 views

Does the Dell Equallogic PS5000E accept SSD drives?

I have an EQL PS5000E which with a recently expired support contract. I am running firmware 6.0.2 and given that this is an old array I don't plan to renew support. My VAR says that the PS5000E can ...
0
votes
1answer
144 views

AWS SSD Volume pricing and IO requests [closed]

I'm looking at the pricing for the new SSD storage volumes here, and I see that there is no listed charge for per 1 million I/O requests like there is with magnetic volumes. Does that mean there is ...
1
vote
1answer
232 views

EC2 Performance Worse After SSD Upgrade

I have an older EC2 Micro instance with a standard LAMP stack installed as a development environment that was utilizing a magnetic drive. I have the same type of setup in production. I wanted to test ...
1
vote
2answers
79 views

Unknown issue taking down client machines, virus or coincidence

I’m sorry if this should be on SuperUser instead of ServerFault. Please ask me to migrate the question instead of flaming. I’ve had 2 windows desktops go down on the network in the space of one month,...
10
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3answers
10k 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 ...
2
votes
3answers
2k 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 ...
1
vote
1answer
748 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
1k 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 ...
8
votes
3answers
5k views

Causes of sudden massive filesystem damage? (“root inode is not a directory”) [closed]

I have a laptop running Maverick (very happily until yesterday), with a Patriot Torx SSD; LUKS encryption of the whole partition; one lvm physical volume on top of that; then home and root in ext4 ...
2
votes
0answers
226 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
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2answers
2k 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 ...
1
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2answers
3k views

Switch SATA disks in DELL PowerEdge R410

I need a 1U rackserver for hosting a website running on Windows Server and MS SQL. I plan to have a SSD drive for the system and SQL database and a large 1-2 TB standard SATA HDD for a lot of ...
1
vote
1answer
301 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 ...
0
votes
1answer
392 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
2k 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
1k 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 ...
3
votes
1answer
540 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, ...
-1
votes
1answer
59 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 ...
8
votes
4answers
4k views

Using SSD as disk cache

Is there software for Linux to use an SSD as disk cache? I believe that Sun does something like this with ZFS, though not sure. A quick search provides nothing suitable. The goal would be to put ...
7
votes
3answers
21k views

What are the main points to avoid RAID5 with SSD?

My understanding is that an SSD has a limited amount of writes. RAID5 performs many writes due to parity information across the drives. So reasoning states that RAID5 would kill and lower the ...
4
votes
1answer
1k 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 16%...
1
vote
1answer
3k 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 ...
3
votes
1answer
870 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 # ...
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votes
2answers
277 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 ...
0
votes
1answer
717 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 ...
0
votes
1answer
157 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 ...
-1
votes
1answer
246 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
2answers
339 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 ...
4
votes
0answers
369 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 ...