raid ssd

Posted on 2013-01-20
Last Modified: 2016-12-08
do i need a special controller to raid ssd or can i just use a standard raid controller? if so, what is the reason for it and what kind of benefits can i expect?
Question by:Kylo Ren
  • 3
  • 2
  • 2
  • +1
LVL 10

Expert Comment

ID: 38799537
Yes if you want to keep TRIM available.  If the drives have good garbage collection it isn't that much of a problem (supposedly).  Without TRIM your drives will slow down a lot over time.
LVL 47

Expert Comment

ID: 38799580
RAID controllers that support SSDs with TRIM are very expensive. Thousands of dollars, and they also require certain SSDS, which make them even higher.

If you have low budget then just use a downtime window to remove the SSDs, do a secure erase or manual trim when attached to a native SATA or SAS connector, then restore, and you are good to go.  Enterprise class SSDs have 20+% free space for housekeeping and the necessity of doing the TRIM isn't nearly what it was even 2 years ago.

Assisted Solution

tyson-edwards earned 250 total points
ID: 38799881
An effective answer to your question ultimately comes down to what you are looking to accomplish and what your budget is.

Many conventional RAID Controllers will hit their own bottlenecks well before the SSD reaches throughput saturation, however they can still provide data resiliency.

There are RAID Controllers designed to operate with High IOPS configurations, such as SSDs that can be quite expensive (700+) however do not have the same throughput limitations.

Another thing to look into is that Software RAID has come a long way and in many cases can provide lower latency and higher throughputs than what you would see through a conventional RAID Controller. Additionally, with Software RAID, you would still keep all of your conventional disk access capabilities, including TRIM and the ability to apply firmware updates to drives.

The times to use a RAID Controller really comes down to whether invisibility to the OS matters. That can come into play in a variety of ways, including disk hot-swaps or not impacting CPU or Memory utilization.
LVL 10

Expert Comment

ID: 38799919
Many software RAID drivers do not support TRIM.  You need to make sure it does when you choose one.
Save on storage to protect fatherhood memories

You're the dad who has everything. This Father's Day, make sure your family memories are protected. My Passport Ultra has automatic backup and password protection to keep your cherished photos and videos safe. With up to 3TB, you have plenty of room to hold the adventures ahead.


Author Comment

by:Kylo Ren
ID: 38807461
ok what if is use windows 8 or windows server 2012 for example the os is able to trim the ssd but im not sure if raided ssd's are supported.

Expert Comment

ID: 38807484
The LSI Megaraid 9266 is a great controller that could meet your needs. It has full Windows support, works with SSDs without bottlenecks, and supports TRIM.

However, you do have the option of using Software RAID as well under Windows 8 or Windows Server 2012, which would give you higher throughput than what you would see with the LSI and still support TRIM.

All comes down to where you want to put your trust: On windows or on a hardware controller.
LVL 10

Accepted Solution

joelsplace earned 250 total points
ID: 38807889
Window7 and newer support TRIM in the OS.  That means that TRIM is supported by the OS in RAID only if the hardware vendor's driver supports it.
It take 3 things for TRIM to work.
1) TRIM capable drive
2) TRIM capable OS
3) TRIM capable driver
LVL 47

Expert Comment

ID: 38807942
The megaraid only works with TRIM on a short list of rather expensive (but quality server-class SSDs).  

Don't worry about TRIM and get enterprise class SSDs with long usage.  You can do a TRIM yourself by erasing them and restoring the data during a downtime window every 6-months to a year depending on usage patterns.

Featured Post

Find Ransomware Secrets With All-Source Analysis

Ransomware has become a major concern for organizations; its prevalence has grown due to past successes achieved by threat actors. While each ransomware variant is different, we’ve seen some common tactics and trends used among the authors of the malware.

Join & Write a Comment

Suggested Solutions

Title # Comments Views Activity
HP Z440 RAID 1 50
Windows 2008 Server repair 13 39
Replace system drive in Domain controller 7 36
Storage Space Configuration 6 32
this article is a guided solution for most of the common server issues in server hardware tasks we are facing in our routine job works. the topics in the following article covered are, 1) dell hardware raidlevel (Perc) 2) adding HDD 3) how t…
This article is an update and follow-up of my previous article:   Storage 101: common concepts in the IT enterprise storage This time, I expand on more frequently used storage concepts.
This video teaches viewers how to encrypt an external drive that requires a password to read and edit the drive. All tasks are done in Disk Utility. Plug in the external drive you wish to encrypt: Make sure all previous data on the drive has been …
This tutorial will walk an individual through the process of installing the necessary services and then configuring a Windows Server 2012 system as an iSCSI target. To install the necessary roles, go to Server Manager, and select Add Roles and Featu…

747 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

12 Experts available now in Live!

Get 1:1 Help Now