EMC 错了么? - MogDB Life

昨天我写到EMC Soft/Hard Read/Write Errors,说EMC建议更换硬盘,可是关于哪一块硬盘产生了分歧.在EMC的Case里,美国专家建议:

Replace drive 0_1_C if not replaced earlier.

因为硬盘编号从0开始C=12,所以我以为应该换的是0_1_13号硬盘,而0_1_13号硬盘也确实是出现错误的一块.可是EMC的现场工程师说0_1_C=0_1_12应该更换0_1_12号硬盘.而0_1_12号一直是没有出现过问题的:

# navicli -h 172.16.9.5 getdisk 0_1_12
Bus 0 Enclosure 1  Disk 12
Vendor Id:               SEAGATE 
Product Id:              ST314680 CLAR72 
Product Revision:        7A0A
Lun:                     19 
Type:                    19: RAID5 
State:                   Enabled
Hot Spare:               19: NO 
Prct Rebuilt:            19: 100 
Prct Bound:              19: 100 
Serial Number:           3HY6TKCA
Sectors:                 139681792 (68204)
Capacity:                68238
Private:                 19: 69704 
Bind Signature:          0x13cf, 1, 12
Hard Read Errors:        0
Hard Write Errors:       0
Soft Read Errors:        0
Soft Write Errors:       0
Read Retries:     N/A
Write Retries:    N/A
Remapped Sectors:        N/A
Number of Reads:         209288064
Number of Writes:        12913664
Number of Luns:          1
Raid Group ID:           11
Clariion Part Number:    DG118032458  
Request Service Time:    N/A
Read Requests:           209288064
Write Requests:          12913664
Kbytes Read:             1454635954
Kbytes Written:          245519280
Stripe Boundary Crossing: 110585780

# navicli -h 172.16.9.5 getdisk 0_0_14
Bus 0 Enclosure 0 Disk 14
Vendor Id:               SEAGATE
Product Id:              ST373307 CLAR72
Product Revision:        7A10
Lun:                     101
Type:                    101: Hot Spare
State:                   Rebuilding
Hot Spare:               101: YES
Hot Spare Replacing:     0_1_12
Prct Rebuilt:            101: 100
Prct Bound:              101: 100
Serial Number:           3HZ9E674
Sectors:                 139681792 (68204)
Capacity:                68238
Private:                 101: 69704
Bind Signature:          0x80bd, 0, 14
Hard Read Errors:        0
Hard Write Errors:       0
Soft Read Errors:        0
Soft Write Errors:       0
Read Retries:     N/A
Write Retries:    N/A
Remapped Sectors:        N/A
Number of Reads:         211913765
Number of Writes:        13028867
Number of Luns:          1
Raid Group ID:           101
Clariion Part Number:    DG118032459
Request Service Time:    N/A
Read Requests:           211913765
Write Requests:          13028867
Kbytes Read:             1515830696
Kbytes Written:          247873115
Stripe Boundary Crossing: 0

# navicli -h 172.16.9.5 getdisk 0_1_12
Bus 0 Enclosure 1 Disk 12
Vendor Id:               SEAGATE
Product Id:              ST373307 CLAR72
Product Revision:        7A10
Lun:                     19
Type:                    19: RAID5
State:                   Equalizing
Hot Spare:               19: NO
Prct Rebuilt:            19: 100
Prct Bound:              19: 100
Serial Number:           3HZ9ZHWN
Sectors:                 139681792 (68204)
Capacity:                68238
Private:                 19: 69704
Bind Signature:          0x13cf, 1, 12
Hard Read Errors:        0
Hard Write Errors:       0
Soft Read Errors:        0
Soft Write Errors:       0
Read Retries:     N/A
Write Retries:    N/A
Remapped Sectors:        N/A
Number of Reads:         1101110
Number of Writes:        2422153
Number of Luns:          1
Raid Group ID:           11
Clariion Part Number:    DG118032459
Request Service Time:    N/A
Read Requests:           1101110
Write Requests:          2422153
Kbytes Read:             145361639
Kbytes Written:          142834423
Stripe Boundary Crossing: 112102090