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

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35 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
6 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
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1answer
24 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
53 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, ...
0
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0answers
18 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 ...
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2answers
36 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% ...
0
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0answers
6 views

Windows 7 64bit fail to wake up on SSD [migrated]

I use to have a HDD on my laptop and my Windows 7 64 bit works fine. I replace my HDD with a SSD recently, and installed Windows 7 64 bit on it. I have installed all device drivers, and there's no ...
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3answers
88 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 ...
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2answers
56 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
74 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
57 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
votes
1answer
57 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: ...
0
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0answers
22 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
votes
2answers
38 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
votes
2answers
48 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
4k 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 ...
1
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1answer
56 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 ...
1
vote
2answers
61 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 ...
1
vote
2answers
52 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
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2answers
70 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
votes
1answer
58 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 ...
1
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1answer
44 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 ...
14
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
91 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 \ ...
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3answers
211 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 ...
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2answers
116 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
votes
1answer
85 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
499 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
288 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
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2answers
404 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 ...
0
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0answers
101 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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votes
1answer
90 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, ...
1
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1answer
403 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
1answer
159 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
votes
1answer
231 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
766 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
votes
2answers
120 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) ...
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votes
3answers
147 views

SSD hard drive compatibility with Dell 1U and Supermicro 1U [closed]

I have a Dell Poweredge 1850 1U and also a custom 1U Supermicro, both hot swappable drive bays. For some reason, it seems the hdd to ssd drive tray is not working with snapping in. I've used this ...
4
votes
1answer
168 views

Adding SSD cache (PCIe) to existing Linux KVM Node with SATA disks

I currently have large KVM nodes utilizing between 8 & 16 RAID10 arrays & hardware raid. We typically provision a single large volume (VM's are backed up off site as well). KVM VM's using LVM ...
-6
votes
1answer
108 views

HP's $1,000 RAID Controller is outclassed by on-board raid? [closed]

HP's $1,000 Smart Array P822 controller is outclassed by an on-board raid controller. I'm having a hell of a time trying to figure this one out. My problem is that performance on the HP controller is ...
0
votes
1answer
342 views

What are the Pros & Cons of Software RAID vs Hardware RAID of 4xSSD(512Gig) in RAID10?

I'm getting this server: Supermicro SuperServer 6018R-TDW It comes with this motherboard: Supermicro X10DDW-i I've decided going with 4xSSD(512Gb) in a RAID10. My server is busy with a demanding ...
2
votes
3answers
1k views

What are the pros & cons of 4xSSD(512Gig) in a RAID10 vs. 2xSSD(1Tb) no RAID?

Lots of read and write operations that my current setup of 4xSAS15k drives in RAID10 is having made me think of a new fast storage. My server is busy with a demanding database, lots of pages, php ...
2
votes
1answer
147 views

HP Server Gen8 Mixed RAID and/or Pass Through

Hello All and thank you in advance for your assistance, I'm considering several HP Gen8 Server models (e.g. DL*e series) for use with WS12R2E. For us, cost savings using a mix of SSD/HDD will likely ...
12
votes
4answers
659 views

Understanding NVMe storage and hardware requirements

I'm a bit confused about the recent developments in PCIe-based storage, particularly as it relates to the NVMe specification and its hardware compatibility. While I've worked extensively with SSDs in ...
8
votes
1answer
690 views

Poor iSCSI performance with SSD disks and 10 Gbe network

iSCSI Target Ubuntu 14.04 (Trusty Tahr) with 16 GB RAM and 16 core CPU as LVM backed iSCSI target using three Samsung SSD disks, each capable of doing 65k IOPS using an LSI 6 Gbit/s ...
2
votes
2answers
319 views

ZFS cksum errors on LSI 9207-9i (SAS2308) with Samsung 850 Pro SSDs

I am testing an LSI 9207-8i controller with 8x Samsung 850 Pro 256GB SSDs attached. SSDs are running latest firmware EXM02B6Q, controller is running P17 and has exhibited same issues with P19. Server ...
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votes
2answers
43 views

how do I know if an SSD reaches its performance capability?

I was monitoring a new db server with SSD RAID-10 installed. It works fine for now but I was worrying someday it could reach its capability as the business goes on. So how can I know that before it's ...
0
votes
1answer
153 views

SMART attribute 231 mystery: Mushkin SSD

Following from this question: How do I convince smartmontools that my SSD is not a hard drive? ... I now have the Mushkin MKNSSDCR120GB-MX's SMART attributes reading as "SandForce Driven SSDs". ...
2
votes
1answer
296 views

really low iops on ssd raid (lower than 1000)

I'm having serious performances problems on a server, with really low iops. server : ProLiant DL360p Gen8 with HP Smart Array P420i Controller (firmware v6) with 4x Samsung 840 - 512GB on raid 1+0 ...
0
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1answer
330 views

How to upgrade an RDS SQL Server Instance to an SSD

I'm trying to upgrade my RDS SQL Server 2012 instance from magnetic storage to an SSD. It is an instance class of db.m1.large with bring your own license. I've tried modifying the storage type, but ...