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

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2answers
80 views

Does the max-80%-use target suggested for ZFS for performance reasons apply to SSD-backed pools?

The Solaris ZFS Best Practices Guide recommends keeping ZFS pool utilization below 80% for best performance: Keep pool space under 80% utilization to maintain pool performance. Currently, pool ...
2
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1answer
77 views

How to disable automatic garbage collection on an SSD?

Solid State Drives (SSD) have a garbage collection functionality which makes space from deleted files available. It is triggered automatically by the drive via a TRIM command sent by the OS Is ...
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1answer
480 views

How is LSI FastPath different from Software RAID?

This question pertains to SSDs on RAID levels without parity (like RAID 0, 1, 10). The recommended settings for FastPath are to set the Write Policy to Write Through, Read Policy to No Read Ahead and ...
2
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1answer
2k views

EBS vs SSD definition

I am confused about the EBS and SSD choice while creating an instance . while choosing instance parameters (Step 2) you will see 2 options in the column Instance Storage (GB) : EBS only or SSD . ...
2
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2answers
102 views

Hyper-V Cluster on SAN + SSD Local Storage

I wanted to know if there are any methods that anyone has done with the following: All of my servers on the hyper-v cluster are stored on the SANS. I have a desire to have the speed of SSD on two of ...
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1answer
21 views

AHCI - Will be two HDDs (SSDs) two times faster?

Lets take common numbers: SATA HDD - 120Mb/s read, write speed heavily depends on gaps in sequence SATA SSD - 550Mb/s read, 500Mb/s write PCIe SSD - 2500Mb/s read, 1500Mb/s write Lets assume they ...
2
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1answer
141 views

Is it really necessary to use fstrim on Samsung SM843T SSDs?

Should we schedule periodical fstrims on Samsung SSD drives? What happens if we don't run such periodical scripts? I am highlighting the model on the Title because I am assuming that the answer is ...
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0answers
229 views

LSI 9207-8i and Samsung 850 PRO TRIM support

A Dell R610 server with LSI 9207-8i HBA card has 6 Samsung 850 PRO SSDs connected to it. hdparm shows TRIM support: sudo hdparm -I /dev/sdc | grep -i trim * Data Set Management TRIM ...
3
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1answer
141 views

Imaging a PC from the Network using MDT

I have been googling around all day trying to figure out what the best approach to this is, or if there even is one. Goal - Quickly image a PC from our Network. Current Setup - Currently, we have ...
2
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1answer
1k views

Why is my Azure VM (D3) Disk I/O crazy slow?

I have setup a D3 VM running Windows 10 on my Azure account. Unfortunately the Disk speed, on both the C (200GB) and D (100GB Temp) are EXTREMELY low. Less than 1MB/s when viewed through Task ...
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0answers
165 views

Tuning mdadm RAID 5 performance?

I have a system with dual Intel E5-2620 v3 @ 2.40GHz, 64 GB ram, an LSI 3008 HBA, 8x 1.6 TB Intel S3510 SSDs. I've been playing benchmarking it in different configurations using fio and I've gotten ...
3
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1answer
50 views

Web-server SSD upgrade: will partial fs switch do?

We had a dedicated server with Hetzner. Once our ecommerce instance got 350+ concurrent users peak we were experiencing some slowdowns and decided to upgrade RAM from 16 to 32GB, as well as adding ...
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0answers
75 views

Proper Steps To Upgrade My Server 2008 R2 Machine From HHD To SSD

I'm working on upgrading a server's hard drive from a standard HHD to an SSD drive. I have cloned the drive with a program called "EaseUS Todo Backup Free 8.6" (which I think does a bunch of extra ...
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1answer
94 views

When Upgrading My 3.5" HDs To SSD HDs Can I Continue To Still Use RAID 1 (MIRROR)?

I'm upgrading my old 3.5" HDs to a set of SSD HDs. I currently run a RAID 1 (MIRROR) array for the 2 old drives (just in case) and want to know how I should rollout the new SSD drives... I have been ...
2
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1answer
551 views

Force PCIe SSD to be /dev/sdb on linux install

Is there any options to force the PCIe SSD during install to be not /dev/sda? I was hoping to reserve the SSD to be limited to be only /var but the grub loader fails each time when I try to set the ...
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0answers
34 views

dmcache - is removing cache device without suspending safe?

I'm using plain dmcache for SSD cache - unmount procedure goes this way: umount fs suspend cache device remove cache device close lvm close LUKS shutdown However sometimes dmsetup doesn't allow me ...
3
votes
1answer
58 views

SMART self tests - worthwhile if already doing weekly RAID checks and smartctl -a output being monitored?

If a server is configured to check the RAID weekly using /usr/sbin/raid-check and the output of smartctl -a is being monitored, is it worthwhile to also have regular SMART short and long self tests be ...
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2answers
73 views

Is there really any need to use a RAID with SSDs ? [closed]

It seems that SSDs inherently address things that RAID arrays were made to solve - Seek time is 0 ; Lifespan is much longer / health reporting is better / data recovery is generally easier. Plus, ...
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0answers
229 views

LINUX fio random read write Total BW and IOPS calcluation

My fio ouptut for random readwrite is as shown below. Fio was initiated with 3 numjobs fio --name=test_random_read_write --iodepth=16 --rw=readwrite --bsrange=4k-8k --direct=1 --size=2G --numjobs=3 ...
0
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2answers
306 views

Recommended 3x SSD Raid for mysql database [duplicate]

I've been configuring dedicated MySQL server (linux) with 3x 300 GB SSD in SoftRaid. I'm trying to decide which Raid to use to get best performance. I'm expecting this database to be a read-heavy (90% ...
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3answers
118 views

load balance across several SSDs in a server

I would like to have a volume spanning several SSDs or HDDs in my server. When I write a file to this volume, the file is written in whole to one of those drives chosen randomly or in round robin ...
0
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2answers
242 views

SSD Write endurance, enterprise vs consumer? [duplicate]

A quick question relating to the write endurance different between the now affordable 'high end' consumer SSD's from the likes of Samsung and the very expensive 'enterprise' class SSD's? Is this ...
3
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1answer
684 views

SSD's in servers, best practice redundancy?

So some might say Im an experienced infrastructure architect guy and have been putting together server farms, storage subsystems and networks for a number of years in datacenter environments (...
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1answer
117 views

non-enterprise SSDs on HP servers [duplicate]

I'm a beginner with configuration of server computers. my company wants to upgrade one of the servers with SSD storage. the server is HP DL380 G8. the hardware seller company which my company works ...
2
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1answer
264 views

ProLiant SE316M1 + Intel S3500 SSD + Smart Array P410 512MB. Battery (BBWC) needed? [duplicate]

I'm looking to replace our SQL Server: HP Proliant DL360 G4 2x 64-bit Intel Xeon 3.60 GHz, 1M Cache, 800 MHz FSB 4GB RAM DDR2 HP Smart Array 6i 2x 146GB SCSI 15K (RAID 1) With this: ...
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0answers
23 views

SSD vs RAM - Optimal ratio for different data sets / databases [duplicate]

I am looking for an advice or even better some studies / benchmarks to read for different scenarios (data sets) when it comes to the best ratio between actual RAM and SSDs. I know that fitting the ...
0
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2answers
464 views

Two Azure disks have the same LUN

I am trying to set up SQL Server on an Azure VM (that has an SSD) per the following articles: Performance Best Practices for SQL Server in Azure Virtual Machines Using SSDs in Azure VMs to store SQL ...
0
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2answers
73 views

SSD or HDD in multiuser workstation used for numerical calculations? [closed]

I am thinking of buying a new workstation that will be used for huge simulations and numerical calculations in programs like MATLAB. These applications generate a vast array of temporary files, a few ...
26
votes
8answers
5k views

Consumer (or prosumer) SSD's vs. fast HDD in a server environment

What are the pro's and con's of consumer SSDs vs. fast 10-15k spinning drives in a server environment? We cannot use enterprise SSDs in our case as they are prohibitively expensive. Here's some notes ...
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1answer
117 views

Changing I/O scheduler for SSD

I have many CentOS systems, some of them have traditional hard disks, some SSD, and some mix of them. I would like to change scheduler for SSD to deadline. So at runtime I can simply scan check ...
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2answers
104 views

RAID 6 - any write amplification in 4-drive RAID?

We're planning to move from a 4-drive RAID6 to a SSD RAID 1, and I was analyzing smartctl data to see how many GB we've writen to the drives over the past year so I can estimate the lifetime of the ...
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2answers
510 views

Hyper-V & SSD Best Performance

I'm building a Hyper-V host using Windows Server 2012. It will be hosting 3 Hyper-V images. I have a SSD and a larger standard HD. I cannot fit everything on the SSD. Performance wise, will I be ...
0
votes
2answers
201 views

Detection of consumer SSDs by enterprise disk controller in non-RAID configuration [closed]

We (a client) are considering [insisting on] using consumer grade SSDs (to keep the cost down) in some Dell R710 and HP Proliant D380 G5 servers. I've looked about and people report the P400 cards ...
0
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1answer
488 views

Munin disk utilization calculation.

I have got intel ssd(series 530, 480gb). Data from intel site: Sequential Read - 540 MB/s Sequential Write - 490 MB/s Random Read - 48000 IOPS Random Write - 80000 IOPS Current load is about 5000 ...
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1answer
61 views

SSDs with the Intel RMS25CB080

I've bought a new server which only allows disks to be connected to a built-in Intel RMS25CB080 RAID controller card. The server has 8 2.5" slots. I'm considering using SSDs with this server, however ...
15
votes
4answers
2k views

Wipe is very slow. Too little entropy?

I have to hand off a Laptop including its hard disc. Since it was not encrypted I wanted to wipe it at least quickly. I know this is not optimal on SSD, but I thought better than just plain readable. ...
0
votes
1answer
230 views

Unable to create instance with local SSD on GCE

I try to create an instance with a local attached SSD on GCE. I used the command from the docs: gcloud compute instances create foobz \ --machine-type n1-standard-8 \ --zone us-central1-f \ ...
1
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3answers
643 views

Hard disk / SSDs - detection and handling of errors - is silent data corruption reliably prevented?

When an error occurs on a drive, is it correct to assume that it will always be detected and reported to the OS (if software RAID such as mdadm) or RAID controller (if hardware RAID) as a failed read (...
0
votes
2answers
353 views

Should I defrag RAID Array with SSD caching(Intel SRT)? [closed]

I have an SSD in system and a RAID 0 array with SSD caching turned on(Intel SRT or Intel Smart Response Tech.). Should i defrag it? Also have a problems with windows defragmentator. It detects my ...
0
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1answer
336 views

How to find mainboards that supports Self Encrypting Device (SED) in BIOS?

There should exist mainboards that support Self Encrypting Device (SED) in BIOS, so when connecting a SSD which have SED support, and SED have been enabled in the BIOS, it prompts on bootup for ...
6
votes
2answers
3k views

does adding heaps of drives to a raid 0 increase performance?

does adding heaps of drives to a raid 0 increase performance? i know that two drives in a striped raid will usually be faster than a single drive but will i notice a difference in performance between ...
2
votes
1answer
1k views

How to send “ATA Secure Erase” command to SSD?

A very good way to erase a SSD which have SED support is to change the password/key. But what to do with those that doesn't have SED support? This article says Fortunately it is possible to erase ...
0
votes
2answers
3k views

Intel S3500 SSD vs 15k SAS HDD

I have recently been thinking of requesting SSD Drives from my hosting provider however its a $300 per month upgrade for 4 x 300GB Intel S3500 SSD's My hosting company told me they do not use SSD ...
1
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0answers
201 views

Poor SSD I/O performance with rTorrent and Debian

I'm using a Dell PowerEdge R210 II server with Intel Xeon E3-1230, 32GB RAM DDR3, 2 x 480 GB SSDs SATA3, 2 x 1 Gbit network connection. I'm using both network connections at the same time (802.3ad ...
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1answer
137 views

Consumer vs Enterprise SSD [closed]

I'm deciding what SSD's to use in our infrastructure. Enterprise drives are obviously more reliable but storage items are expendable and will fail anyway. So considering that we have proper RAID, ...
2
votes
1answer
2k views

Can I Use a Normal SSD disk in HP DL380 G6

We have a bunch of DL-380 G6 servers in our company, I want to know whether it is possible to use 2.5" SSD hard drives (with SATA III interface) on these servers or not?
2
votes
2answers
394 views

Low SSD mdadm raid0 performance

I have got ubuntu server 12.04 with software raid0 intel sata3 ssd(2*480GB). raid is used for postgresql database. There is 51% of raid space is free. After postgres shutdown, "dd" command shows ...
0
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1answer
708 views

Install a SATA SSD in hot swap server

I am trying to install a SATA SSD into a hot swappable server (Dell PowerEdge T320). The drive is not visible within the Windows 2008 R2. Server details: Dell T320 PowedEdge PERC H710 Raid ...
4
votes
2answers
3k views

Samsung 850 EVO + HP P410 limited iops?

I´m experiencing a weird write iops limitation with a HP P410 256mb cache controller and 4x consumer grade ssd´s (Samsung EVO 850) in RAID5/10. After upgrade to latest firmware (6.64) for HP P410 ...
3
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2answers
207 views

ESXi build with SSD's and storage sharing with HDD

So the plan is to convert 4 boxed servers into all virtual servers with a new server. The 4 servers now don't require much horsepower to do much, so only looking at the Xeon E5-2470 (8C, 2.4ghz, iirc) ...