PowerEdge HDD/SCSI/RAID

Last reply by 02-13-2022 Solved
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2 Bronze
2 Bronze
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Raid6 with hotspare or not

hi specialists, 

here is what we are going to install:

yajtsav2_0-1644570944553.png

perc H840 Raid adapter will be used for the MD1400, should we configure  global hotspare?

what is the best practices?

thanks and regards

 

Solutions (2)

Accepted Solutions
Dell Technologies
396

You can use a global hot spare to automatically replace a failed physical disk in any redundant array as long as the capacity of the global hot spare is equal to or larger than the capacity of the failed physical disk. So in this case if any of the disk in RAID 6 is failed global hot spare will replace it till you replace failed drive with working one.


Thanks,
DELL-Shine K
#IWork4Dell

View solution in original post

338

Hi, JSz is correct and also, you need a hot spare for RAID 1+0 as well.


DELL-Young E
Social Media and Communities Professional
Dell Technologies | Enterprise Support Services
#IWork4Dell

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View solution in original post

Replies (5)
Dell Technologies
397

You can use a global hot spare to automatically replace a failed physical disk in any redundant array as long as the capacity of the global hot spare is equal to or larger than the capacity of the failed physical disk. So in this case if any of the disk in RAID 6 is failed global hot spare will replace it till you replace failed drive with working one.


Thanks,
DELL-Shine K
#IWork4Dell

387

thanks

just thinking about using all 14x 4TB for a raid6 and the other 8x 4TB raid 6 without hot spare or should i reserve 1x 4TB for HS?

367

You need to take a call between additional space and extra redundancy. If you are ok with 2 disk redundancy you can go ahead without HS. If you need additional disk failure  protection you can have HS.


Thanks,
DELL-Shine K
#IWork4Dell

3 Silver
355

In most cases you should use a hot spare, even though you'll 'lose' about one disk worth of capacity that way.

339

Hi, JSz is correct and also, you need a hot spare for RAID 1+0 as well.


DELL-Young E
Social Media and Communities Professional
Dell Technologies | Enterprise Support Services
#IWork4Dell

Did I answer your query? Please click on ‘Accept as Solution’. ‘Kudo’ the posts you like!

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