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Apparently, even today; because RAID1 turns the drives into a single storage volume, the O/S stops issuing trim commands. &nbsp;However, the Intel DC S3700 series of SSD's use an internal feature called &quot;garbage collection&quot; which is very similar to trim and overcomes the problem of having 2 SSD's in a RAID1 configuration: <a href="http://www.storagereview.com/intel_ssd_dc_s3700_series_enterprise_ssd_review" rel="ugc">http://www.storagereview.com/intel_ssd_dc_s3700_series_enterprise_ssd_review</a>
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Apparently, even today; because RAID1 turns the drives into a single storage volume, the O/S stops issuing trim commands.  However, the Intel DC S3700 series of SSD's use an internal feature called "garbage collection" which is very similar to trim and overcomes the problem of having 2 SSD's in a RAID1 configuration: http://www.storagereview.com/intel_ssd_dc_s3700_series_enterprise_ssd_review [http://www.storagereview.com/intel_ssd_dc_s3700_series_enterprise_ssd_review]

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Agree with dlethe, use software RAID for SSDs. Look at LSI MegaRAID FastPath - you buy an expensive LSI controller, then buy a fastpath license for it that enables it to bypass most of the hardware RAID and do it with the software driver instead. HP do the same but call it Smart Path.
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Agree with dlethe, use software RAID for SSDs. Look at LSI MegaRAID FastPath - you buy an expensive LSI controller, then buy a fastpath license for it that enables it to bypass most of the hardware RAID and do it with the software driver instead. HP do the same but call it Smart Path.

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Hi,<br />
<br />
I have a Dell Poweredge 840 as file server with 160 GB SSD. I am planning to add another SSD to make it a RAID 1. Do we have any RAID 1 PCI Controller that supports TRIM command? I am looking for something around $200.
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Hi,

I have a Dell Poweredge 840 as file server with 160 GB SSD. I am planning to add another SSD to make it a RAID 1. Do we have any RAID 1 PCI Controller that supports TRIM command? I am looking for something around $200.

Raid 1 Controller Suggestions

Computer data storage, often called storage or memory, is a technology consisting of computer components and recording media used to retain digital data. In addition to local storage devices like CD and DVD readers, hard drives and flash drives, solid state drives can hold enormous amounts of data in a very small device. Cloud services and other new forms of remote storage also add to the capacity of devices and their ability to access more data without building additional data storage into a device.

Storage

Servers are computing devices that are similar to desktop computers in that they have the same basic components, but are significantly different in size, configuration and purpose. Servers are usually accessed over a network, and many run unattended, without a computer monitor, input device, audio hardware or USB interfaces. Many servers do not have a graphical user interface (GUI), and are configured and managed remotely. Servers typically include hardware redundancy such as dual power supplies, RAID disk systems, and ECC memory, along with extensive pre-boot memory testing and verification. Critical components might be hot swappable, and to guard against overheating, servers might have more powerful fans or use water cooling.

Server Hardware

Since 1984, Dell has been delivering technology to fit your life.
Dell is in Enterprise, Home Office and Consumer sectors of the market, supplying a broad range of customizable desktops, laptops, notebooks, servers, storage, and network devices.

Dell

RAID stands for Redundant Array of Independent Disks.

RAID is data storage technology that allows multiple drives to be used together as a single virtual drive for reasons such as fault tolerance, reliability and performance. 

There are several different levels of RAID that determine how the data is stored and the level of redundancy achieved across the drives.