| 发明名称 |
RAID ARRAY SYSTEMS AND OPERATIONS USING MAPPING INFORMATION |
| 摘要 |
An apparatus may include a redundant array of independent disks (RAID) array including a plurality of solid state drives (SSDs). The apparatus may further include a RAID array controller coupled to the plurality of SSDs. The RAID array controller may be configured to determine whether one or more logical block addresses (LBAs) of a stripe of the RAID array are unmapped. The one or more LBAs may be associated with one or more SSDs of the plurality of SSDs. The RAID array controller may be configured to determine data corresponding to the stripe based on the determination of whether the one or more LBAs are unmapped. RAID operations (such has Rebuild, Exposed Mode Read, and/or Parity Resync operations) may be optimized based on the knowledge of which LBAs are mapped and unmapped. |
| 申请公布号 |
US2016246678(A1) |
申请公布日期 |
2016.08.25 |
| 申请号 |
US201514687412 |
申请日期 |
2015.04.15 |
| 申请人 |
International Business Machines Corporation |
发明人 |
Galbraith Robert;Walls Andrew D. |
| 分类号 |
G06F11/10;G06F3/06 |
主分类号 |
G06F11/10 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A storage device comprising:
a redundant array of independent disks (RAID) array including a plurality of solid state drives (SSDs); and a RAID array controller coupled to the plurality of SSDs, the RAID array controller configured to determine whether one or more logical block addresses (LBAs) of a stripe of the RAID array are unmapped, the one or more LBAs associated with one or more SSDs of the plurality of SSDs, the RAID array controller configured to determine data corresponding to the stripe based on the determination of whether the one or more LBAs are unmapped. |
| 地址 |
Armonk NY US |
