Dell PERC 6/i SAS T774H raid card, does it *need* a battery pack to function?

Posted on 2016-10-10
Last Modified: 2016-12-08
Hello all,
I bought a Dell PERC 6/i T774H raid card, but it did not come with a battery pack. Is it necessary in order to use the card in general, or more just a good idea to have one?

Question by:MostHated
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3
  • 2

Accepted Solution

Casey Weaver earned 500 total points
ID: 41837623
It doesn't have to have it, but because of risks, you'll have to override settings to make it use the card's cache. I also don't recommend any parity based raid like 5 or 6 without a battery as with a power failure or sudden shutdown the risk of parity data not getting written will be high. Parity raids without caching enabled will suffer huge write performance losses.

Author Comment

ID: 41837626
Is it possible to get things setup and installed while I try and source a battery pack, and then plug it in once it arrives and retain everything I already had setup?

Assisted Solution

by:Casey Weaver
Casey Weaver earned 500 total points
ID: 41837629
Yes, and most cards the battery is even hot swappable. On some versions, write caching automatically enables itself in the presence of a battery, in other models, you go into the software and check some boxes to enable it after installing the battery.

Author Comment

ID: 41837632
Much appreciated sir, and thank you for the quick replies. You have been a great help.

Expert Comment

by:Casey Weaver
ID: 41837633

In this document it appears the 6/i enables and disables caching in the presence of a battery. There is a force write back option without a battery, as the page explains.

Featured Post

On Demand Webinar: Networking for the Cloud Era

Did you know SD-WANs can improve network connectivity? Check out this webinar to learn how an SD-WAN simplified, one-click tool can help you migrate and manage data in the cloud.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Create your own, high-performance VM backup appliance by installing NAKIVO Backup & Replication directly onto a Synology NAS!
This article shows how to use a free utility called 'Parkdale' to easily test the performance and benchmark any Hard Drive(s) installed in your computer. We also look at RAM Disks and their speed comparisons.
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 Micro Tutorial will teach you how to reformat your flash drive. Sometimes your flash drive may have issues carrying files so this will completely restore it to manufacturing settings. Make sure to backup all files before reformatting. This w…

726 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