Re: [AFMUG] RAID controller eats disks?

v" <d...@logicalwebhost.com> To: af@afmug.com Sent: Wednesday, December 6, 2017 7:42:03 PM Subject: Re: [AFMUG] RAID controller eats disks? with RAID 5 you have drive redundancy, but with RAID 6 it distributes the data to rebuild your array across the volume in such a way where you can lose

Re: [AFMUG] RAID controller eats disks?

with RAID 5 you have drive redundancy, but with RAID 6 it distributes the data to rebuild your array across the volume in such a way where you can lose two whole hard drives (but not three) and still rebuild. With larger drives you have higher likelihood that you’d have your failed drive, but

Re: [AFMUG] RAID controller eats disks?

On 12/6/17 12:02, Adam Moffett wrote: Well...I'm using 15K SAS in RAID10. Only 600GB because enterprise drives are $$. Out of curiosity what is it that I would need good luck for?  Reliability problems? The largest RAID6 I have currently is 12x 4TB with a hot spare. It takes forever

Re: [AFMUG] RAID controller eats disks?

2017 12:58:44 PM Subject: Re: [AFMUG] RAID controller eats disks? To add to this, if you are using raid5/6 with modern consumer multiple TB disks... Well... Good luck to you. On Dec 6, 2017 11:47 AM, "Dev" <d...@logicalwebhost.com> wrote: ZFS and some of the other more recent additio

Re: [AFMUG] RAID controller eats disks?

To add to this, if you are using raid5/6 with modern consumer multiple TB disks... Well... Good luck to you. On Dec 6, 2017 11:47 AM, "Dev" wrote: > ZFS and some of the other more recent additions do offer some tasty > features, along with HBA’s, but there’s much wider

Re: [AFMUG] RAID controller eats disks?

ZFS and some of the other more recent additions do offer some tasty features, along with HBA’s, but there’s much wider support, deeper toolset and more documentation for the average person to get RAID 6 working than some of the new cluster stuff. Yes, it’s cool, yes, it works and scales,

Re: [AFMUG] RAID controller eats disks?

On 12/6/17 04:50, Mike Hammett wrote: Ditch RAID and just go to HBAs with a better file system like ZFS or CEPH. Whenever this topic comes up I feel like I must be the only one who's never really had a problem with RAID controllers.

Re: [AFMUG] RAID controller eats disks?

Maybe next time. -- Original Message -- From: "Mike Hammett" <af...@ics-il.net> To: af@afmug.com Sent: 12/6/2017 7:50:42 AM Subject: Re: [AFMUG] RAID controller eats disks? Ditch RAID and just go to HBAs with a better file system like ZFS or CEPH. - Mike Ham

Re: [AFMUG] RAID controller eats disks?

Interesting thought. -- Original Message -- From: "Josh Reynolds" <j...@kyneticwifi.com> To: af@afmug.com Sent: 12/6/2017 1:23:16 AM Subject: Re: [AFMUG] RAID controller eats disks? I would consider a problem with the power cable used to feed that disk. On Dec 5, 201

Re: [AFMUG] RAID controller eats disks?

sday, December 5, 2017 11:48:06 PM Subject: Re: [AFMUG] RAID controller eats disks? Old RAID controllers are notorious for misbehaving and giving false readings on drive/volume health. Additionally, the older the controller, the harder it is to find good shelf spares with matching mod

Re: [AFMUG] RAID controller eats disks?

I would consider a problem with the power cable used to feed that disk. On Dec 5, 2017 11:48 PM, "Dev" wrote: > Old RAID controllers are notorious for misbehaving and giving false > readings on drive/volume health. Additionally, the older the controller, > the harder it

Re: [AFMUG] RAID controller eats disks?

Old RAID controllers are notorious for misbehaving and giving false readings on drive/volume health. Additionally, the older the controller, the harder it is to find good shelf spares with matching model/firmware, etc. that will be happy reading your RAID volume(s) in the event of a controller

Re: [AFMUG] RAID controller eats disks?

g.com Sent: 12/4/2017 9:59:50 AM Subject: Re: [AFMUG] RAID controller eats disks? I'm more impressed that you're actually getting a report predicting that the drive is failing. I have never ever had a raid controller report a disk may be failing. They just go straight from working to failed.

Re: [AFMUG] RAID controller eats disks?

I'm more impressed that you're actually getting a report predicting that the drive is failing. I have never ever had a raid controller report a disk may be failing. They just go straight from working to failed. Usually failing into a high latency state, where they still work, just really

[AFMUG] RAID controller eats disks?

I've got a somewhat old Dell Poweredge with a PERC H700 RAID controller. About a year ago SMART predicted a failure on disk 4, so I replaced it. A few weeks ago SMART predicted a failure on disk 4, so I replaced it. Today SMART predicts a failure on disk 4. On the second incident I have no