Re: [ceph-users] JBOD question

2018-07-25 Thread Caspar Smit
Satish, Yes, that card support 'both'. You have to flash the IR firmware (IT Firmware = JBOD only) and then you are able to create RAID1 sets in the BIOS of the card and any ununsed disks will be seen by the OS as 'jbod' Kind regards, Caspar Smit 2018-07-23 20:43 GMT+02:00 Satish Patel : > I

Re: [ceph-users] JBOD question

2018-07-23 Thread Satish Patel
I am planning to buy "LSI SAS 9207-8i" does anyone know it support both RAID & JBOD mode together so i can do RAID-1 on OS disk and other disk for JBOD On Sat, Jul 21, 2018 at 11:16 AM, Willem Jan Withagen wrote: > On 21/07/2018 01:45, Oliver Freyermuth wrote: >> >> Hi Satish, >> >> that really

Re: [ceph-users] JBOD question

2018-07-21 Thread Willem Jan Withagen
On 21/07/2018 01:45, Oliver Freyermuth wrote: Hi Satish, that really completely depends on your controller. This is what I get on an older AMCC 9550 controller. Note that the disk type is set to JBOD. But the disk descriptors are hidden. And you'll never know what more is not done right.

Re: [ceph-users] JBOD question

2018-07-21 Thread Alex Gorbachev
On Fri, Jul 20, 2018 at 4:01 PM, Satish Patel wrote: > Folks, > > I never used JBOD mode before and now i am planning so i have stupid > question if i switch RAID controller to JBOD mode in that case how > does my OS disk will get mirror? > > Do i need to use software raid for OS disk when i use

Re: [ceph-users] JBOD question

2018-07-20 Thread Oliver Freyermuth
Hi Satish, that really completely depends on your controller. For what it's worth: We have AVAGO MegaRAID controllers (9361 series). They can be switched to a "JBOD personality". After doing so and reinitializing (poewrcycling), the cards change PCI-ID and run a different firmware, optimized

Re: [ceph-users] JBOD question

2018-07-20 Thread Satish Patel
Thanks Brian, That make sense because i was reading document and found you can either choose RAID or JBOD On Fri, Jul 20, 2018 at 5:33 PM, Brian : wrote: > Hi Satish > > You should be able to choose different modes of operation for each > port / disk. Most dell servers will let you do RAID and

Re: [ceph-users] JBOD question

2018-07-20 Thread Brian :
Hi Satish You should be able to choose different modes of operation for each port / disk. Most dell servers will let you do RAID and JBOD in parallel. If you can't do that and can only either turn RAID on or off then you can use SW RAID for your OS On Fri, Jul 20, 2018 at 9:01 PM, Satish Patel

[ceph-users] JBOD question

2018-07-20 Thread Satish Patel
Folks, I never used JBOD mode before and now i am planning so i have stupid question if i switch RAID controller to JBOD mode in that case how does my OS disk will get mirror? Do i need to use software raid for OS disk when i use JBOD mode? ___