I've noticed that one drive is causing errors during the parity check process.

Could someone please confirm this drive is failing and needs to be replaced?

 

Attached to port: sdm
ID#	ATTRIBUTE NAME	FLAG	VALUE	WORST	THRESH	TYPE	UPDATED	FAILED	RAW VALUE
1	Raw Read Error Rate	0x002f	151	146	051	Pre-fail	Always	Never	103950
3	Spin Up Time	0x0027	170	168	021	Pre-fail	Always	Never	6491
4	Start Stop Count	0x0032	094	094	000	Old age	Always	Never	6162
5	Reallocated Sector Ct	0x0033	187	187	140	Pre-fail	Always	Never	246
7	Seek Error Rate	0x002e	200	200	000	Old age	Always	Never	0
9	Power On Hours	0x0032	080	080	000	Old age	Always	Never	14822
10	Spin Retry Count	0x0032	100	100	000	Old age	Always	Never	0
11	Calibration Retry Count	0x0032	100	100	000	Old age	Always	Never	0
12	Power Cycle Count	0x0032	100	100	000	Old age	Always	Never	186
192	Power-Off Retract Count	0x0032	200	200	000	Old age	Always	Never	114
193	Load Cycle Count	0x0032	167	167	000	Old age	Always	Never	99560
194	Temperature Celsius	0x0022	116	108	000	Old age	Always	Never	34
196	Reallocated Event Count	0x0032	038	038	000	Old age	Always	Never	162
197	Current Pending Sector	0x0032	197	196	000	Old age	Always	Never	1145
198	Offline Uncorrectable	0x0030	200	198	000	Old age	Offline	Never	2
199	UDMA CRC Error Count	0x0032	200	200	000	Old age	Always	Never	0
200	Multi Zone Error Rate	0x0008	195	022	000	Old age	Offline	Never	1427

Yep, definitely needs to be replaced. That's a huge amount of bad sectors.