| HPE Storage Users Group https://www.3parug.com/ |
|
| NL CPG, RAID 6? https://www.3parug.com/viewtopic.php?f=18&t=1106 |
Page 1 of 1 |
| Author: | Joseph [ Mon Jan 12, 2015 5:03 pm ] |
| Post subject: | NL CPG, RAID 6? |
Guys, does anyone advise reasoning behind this best practice? Best practice: NL CPGs should be of the RAID 6 type by default. The “set size” (data to parity ratio) can be changed from the default value of 8 (6+2) if the system configuration supports it. RAID 5 is not recommended with NL disks. |
|
| Author: | Schmoog [ Mon Jan 12, 2015 5:44 pm ] |
| Post subject: | Re: NL CPG, RAID 6? |
Rebuild time with the nl drives is very long. Think hours at best, days in some cases, so you want the additional protection in case of multiple failures in a short period of time |
|
| Author: | afidel [ Mon Jan 12, 2015 11:01 pm ] |
| Post subject: | Re: NL CPG, RAID 6? |
BER is also several orders of magnitude worse on NL so you have to worry about URE during rebuild. |
|
| Author: | Joseph [ Wed Jan 14, 2015 6:01 pm ] |
| Post subject: | Re: NL CPG, RAID 6? |
Thanks for clarification guys! |
|
| Page 1 of 1 | All times are UTC - 5 hours |
| Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group http://www.phpbb.com/ |
|