Re: [CentOS] [OT] 8-15 TB storage: any recommendations?

2010-01-08 Thread Thomas Harold
On 1/7/2010 12:28 PM, Joseph L. Casale wrote: I also heard that disks above 1TB might have reliability issues. Maybe it changed since then... I remember rumors about the early 2TB Seagates. Personally, I won't RAID SATA drives over 500GB unless they're enterprise-level ones with the limits

Re: [CentOS] [OT] 8-15 TB storage: any recommendations?

2010-01-08 Thread John Doe
From: Thomas Harold thomas-li...@nybeta.com Yah, RAID-5 is a bad idea anymore with the large drive sizes. RAID-6 or RAID-10 is a far better choice. I prefer RAID-10 because the rebuild time is based on the size of a drive pair, not the entire array. Anyone tested RAID 50 and/or 60

Re: [CentOS] [OT] 8-15 TB storage: any recommendations?

2010-01-08 Thread nate
John Doe wrote: From: Thomas Harold thomas-li...@nybeta.com Yah, RAID-5 is a bad idea anymore with the large drive sizes. RAID-6 or RAID-10 is a far better choice. I prefer RAID-10 because the rebuild time is based on the size of a drive pair, not the entire array. Anyone tested RAID 50

Re: [CentOS] [OT] 8-15 TB storage: any recommendations?

2010-01-08 Thread Matty
On Thu, Jan 7, 2010 at 12:01 PM, Thomas Harold thomas-li...@nybeta.com wrote: On 1/7/2010 10:54 AM, John Doe wrote: From: Karanbir Singhmail-li...@karan.org On 01/07/2010 02:30 PM, Boris Epstein wrote: KB, thanks. When you say dont go over 1 TiB in storage per spindle what are you referring

Re: [CentOS] [OT] 8-15 TB storage: any recommendations?

2010-01-07 Thread Karanbir Singh
On 01/06/2010 09:35 PM, Boris Epstein wrote: Hello everyone, This is not directly related to CentOS but still: we are trying to set up some storage servers to run under Linux - most likely CentOS. The storage volume would be in the range specified: 8-15 TB. Any recommendations as far as

Re: [CentOS] [OT] 8-15 TB storage: any recommendations?

2010-01-07 Thread Boris Epstein
On Thu, Jan 7, 2010 at 9:27 AM, Karanbir Singh mail-li...@karan.org wrote: On 01/06/2010 09:35 PM, Boris Epstein wrote: Hello everyone, This is not directly related to CentOS but still: we are trying to set up some storage servers to run under Linux - most likely CentOS. The storage volume

Re: [CentOS] [OT] 8-15 TB storage: any recommendations?

2010-01-07 Thread William Warren
On 1/7/2010 9:30 AM, Boris Epstein wrote: On Thu, Jan 7, 2010 at 9:27 AM, Karanbir Singhmail-li...@karan.org wrote: On 01/06/2010 09:35 PM, Boris Epstein wrote: Hello everyone, This is not directly related to CentOS but still: we are trying to set up some storage servers to run

Re: [CentOS] [OT] 8-15 TB storage: any recommendations?

2010-01-07 Thread Karanbir Singh
On 01/07/2010 02:30 PM, Boris Epstein wrote: KB, thanks. When you say dont go over 1 TiB in storage per spindle what are you referring to as spindle? disk. it boils down to how much data do you want to put under one read/write stream. the other thing is that these days 1.5TB disks are the

Re: [CentOS] [OT] 8-15 TB storage: any recommendations?

2010-01-07 Thread Robert Heller
At Thu, 7 Jan 2010 09:30:17 -0500 CentOS mailing list centos@centos.org wrote: On Thu, Jan 7, 2010 at 9:27 AM, Karanbir Singh mail-li...@karan.org wrote: On 01/06/2010 09:35 PM, Boris Epstein wrote: Hello everyone, This is not directly related to CentOS but still: we are trying to set

Re: [CentOS] [OT] 8-15 TB storage: any recommendations?

2010-01-07 Thread John Doe
From: Karanbir Singh mail-li...@karan.org On 01/07/2010 02:30 PM, Boris Epstein wrote: KB, thanks. When you say dont go over 1 TiB in storage per spindle what are you referring to as spindle? disk. it boils down to how much data do you want to put under one read/write stream. the

Re: [CentOS] [OT] 8-15 TB storage: any recommendations?

2010-01-07 Thread Thomas Harold
On 1/7/2010 10:54 AM, John Doe wrote: From: Karanbir Singhmail-li...@karan.org On 01/07/2010 02:30 PM, Boris Epstein wrote: KB, thanks. When you say dont go over 1 TiB in storage per spindle what are you referring to as spindle? disk. it boils down to how much data do you want to put under

Re: [CentOS] [OT] 8-15 TB storage: any recommendations?

2010-01-07 Thread Joseph L. Casale
I also heard that disks above 1TB might have reliability issues. Maybe it changed since then... I remember rumors about the early 2TB Seagates. Personally, I won't RAID SATA drives over 500GB unless they're enterprise-level ones with the limits on how long before the drive reports a problem

Re: [CentOS] [OT] 8-15 TB storage: any recommendations?

2010-01-07 Thread Ray Van Dolson
On Thu, Jan 07, 2010 at 05:28:34PM +, Joseph L. Casale wrote: I also heard that disks above 1TB might have reliability issues. Maybe it changed since then... I remember rumors about the early 2TB Seagates. Personally, I won't RAID SATA drives over 500GB unless they're

Re: [CentOS] [OT] 8-15 TB storage: any recommendations?

2010-01-07 Thread Karanbir Singh
On 01/07/2010 05:28 PM, Joseph L. Casale wrote: An often overlooked issue is the rebuild time with Linux software raid and all hw raid controllers I have seen. On large drives the times are so long as a result of the sheer size, if the array is degraded you are exposed during the rebuild. As