Dell EqualLogic PS6210XS EqualLogic Group Manager Administrator s Guide PS Ser - Page 121
Raid Sets, 2 Hdd 6+2 Ssd
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RAID Sets The tables below show a logical drive layout when an array is initialized for the first time. The actual physical layout of drives can change and evolve due to maintenance and administrative actions. Spare drives can move as they are used to replace failed drives and newly added drives become the spares. NOTE: It is not possible to determine which physical drives are associated with each RAID set. This information is dynamic and maintained by the Dell EqualLogic firmware. Table 25. 12-Drive Configuration shows the RAID set relationship for each RAID type in a 12-drive configuration. Table 25. 12-Drive Configuration RAID Policy Spare Disks RAID Set Relationship RAID 6 1 (9+2) RAID 10 2 (5+5) RAID 50 2 (4+1, 4+1) RAID 5 1 (10+1) Best Practices Yes Yes For selected configurations Not for business-critical data Table 26. 14-Drive Configuration shows the RAID set relationship for each RAID type in a 14-drive configuration. Table 26. 14-Drive Configuration RAID Policy Spare Disks RAID Set Relationship RAID 6 1 (11+2) RAID 6 Accelerated 1 HDD (6+2 HDD) (6+2 SSD) RAID 10 2 (6+6) RAID 50 2 (5+1)(5+1) RAID 5 1 (12+1) Best Practices Yes N/A Yes For selected configurations Not for business-critical data Table 27. 16-Drive Configuration shows the RAID set relationship for each RAID type in a 16-drive configuration. Table 27. 16-Drive Configuration RAID Policy Spare Disks RAID Set Relationship RAID 6 1 (13+2) RAID 10 2 (7+7) RAID 50 2 (6+1, 6+1 ) RAID 5 1 (14+1) Best Practices Yes Yes For selected configurations Not for business-critical data Table 28. 24-Drive Configuration shows the RAID set relationship for each RAID type in a 24-drive configuration. Table 28. 24-Drive Configuration RAID Policy Spare Disks RAID Set Relationship RAID 6 1 (10+2) (9+2) RAID 10 2 (6+6) (5+5) RAID 50 2 (5+1, 5+1) (4+1, 4+1) RAID 5 1 (12+1) (9+1) Best Practices Yes Yes For selected configurations Not for business-critical data PS Series Group Operations 121