• Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 1366
  • Last Modified:

FreeNAS Hardware RAID5 controller

I want to setup a FreeNAS server with 4 Samsung 1.5Tb hard drives. The (Dell) Adaptec 2610SA 6 port SATA Raid Controller Card that I have does not seem to like drives over 1Tb so I need another.

Does anyone have any suggestions for a 4, 5 or 6 port SATA RAID controller that IS compatible with FreeNAS and is also reasonable in price. Storage space is the requirement, not speed.

Or, can the RAID control I have be updated with firmware to support 1.5Tb drives?
3 Solutions
JamesSenior Cloud Infrastructure EngineerCommented:
There is a 2TB limit on this card. One option would be to create the other disks as dynamic disks.

I would highly recommend this product: http://www.newegg.com/Product/Product.aspx?Item=N82E16822102042

It works great for me! Too bad the controller you got was no good. 2TB limit is a joke on any modern RAID controller.

RAID 5 ? I hope this is not for any dosage of random write usages (apart for Archive, Backup, WriteOnceReadMany usages that are good opportunity for parity RAID)

I although hope those HDD are "Enterprise class" Samsung with a UBE of 1 unreadable sector per 10e15bits read...otherwise, you have :
-a 13% probability of a failure at rebuild time
-a very high probability of a "disk disconnect" at the very first error recovery process lasting for more than 8 seconds (RAID capable drives has a CCTL / TLER feature to timeout in 7 seconds max)
-a 13% probability of a failure at rebuild time
==> Sorry I wrote a wrong number because 13% is only for ONE 1.5TB "Desktop class" drive read at once

With 3x 1.5TB to be read at once (to rebuild a new 4th drive), the probability of a unrecoverable read error is about 33%...
==> Fyi, this probability (for 3 drives to rebuild a 4th one) with "Enterprise class" drives (UBE of 1 per 10e15) is about 2.6%
QlemoBatchelor and DeveloperCommented:
This question has been classified as abandoned and is being closed as part of the Cleanup Program.  See my comment at the end of the question for more details.
Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

Join & Write a Comment

Featured Post

Easily Design & Build Your Next Website

Squarespace’s all-in-one platform gives you everything you need to express yourself creatively online, whether it is with a domain, website, or online store. Get started with your free trial today, and when ready, take 10% off your first purchase with offer code 'EXPERTS'.

Tackle projects and never again get stuck behind a technical roadblock.
Join Now