Drives on their last legs?

[Jay]

We've got four of these (Barracuda 7200.12 1 TB) in a NAS in two RAID1 arrays. Just replaced one today out of four as a bit of pre-emptive maintenance. Checked out their SMART values some of the values look a bit iffy. Are they already as good as dead or do we have a few more months on them?

Device Model: ST31000528AS
Serial Number: 9VP0XQLF
Firmware Version: CC35

ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE
1 Raw_Read_Error_Rate 0x000f 111 099 006 Pre-fail Always - 39363705
3 Spin_Up_Time 0x0003 095 095 000 Pre-fail Always - 0
4 Start_Stop_Count 0x0032 100 100 020 Old_age Always - 38
5 Reallocated_Sector_Ct 0x0033 100 100 036 Pre-fail Always - 21
7 Seek_Error_Rate 0x000f 068 060 030 Pre-fail Always - 6444759
9 Power_On_Hours 0x0032 083 083 000 Old_age Always - 15417
10 Spin_Retry_Count 0x0013 100 100 097 Pre-fail Always - 0
12 Power_Cycle_Count 0x0032 100 100 020 Old_age Always - 19
183 Unknown_Attribute 0x0032 100 100 000 Old_age Always - 0
184 Unknown_Attribute 0x0032 100 100 099 Old_age Always - 0
187 Unknown_Attribute 0x0032 100 100 000 Old_age Always - 0
188 Unknown_Attribute 0x0032 100 100 000 Old_age Always - 0
189 Unknown_Attribute 0x003a 100 100 000 Old_age Always - 0
190 Unknown_Attribute 0x0022 063 059 045 Old_age Always - 622264357
194 Temperature_Celsius 0x0022 037 041 000 Old_age Always - 37 (Lifetime Min/Max 0/18)
195 Hardware_ECC_Recovered 0x001a 045 015 000 Old_age Always - 39363705
197 Current_Pending_Sector 0x0012 100 100 000 Old_age Always - 0
198 Offline_Uncorrectable 0x0010 100 100 000 Old_age Offline - 0
199 UDMA_CRC_Error_Count 0x003e 200 200 000 Old_age Always - 0
240 Head_Flying_Hours 0x0000 100 253 000 Old_age Offline - 223583112543340
241 Unknown_Attribute 0x0000 100 253 000 Old_age Offline - 4002930791
242 Unknown_Attribute 0x0000 100 253 000 Old_age Offline - 3580539013

[Knight Of Nih]

dont risk it, i just ran the serial through the warranty tracker and its under warranty. get them to replace the faulty drive mate.
Warranty and Returns Assistance | Seagate

[Jay]

Can they be classified as faulty yet?

They haven't failed yet and I've only just replaced one as a precaution and to introduce a variation into the age of the array.

[Knight Of Nih]

if i get a drive with SMART errors i replace it yes. give it a go.

[jabsy]

They are AS drives. In a NAS/Array you should only use ES or NS drives.

[Jay]

They are AS drives. In a NAS/Array you should only use ES or NS drives.

It's from a system that was setup previously by an external 'IT consultant' before my time. I've already started swapping the proper drives in on a schedule, just wanted to see how urgently I need to rotate them out. One of the many things we're working through.