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From: Gianluca Frustagli <gianfrus@tiscali.it>
To: linux-raid@vger.kernel.org
Subject: SSD based sw RAID: is ERC/TLER really important?
Date: Sat, 24 Jul 2021 20:41:06 +0200	[thread overview]
Message-ID: <2232919.g0K5C1TF2C@chirone> (raw)

Hi, 

nowadays we all know that the ERC/TLER capability is very important for the 
use of spinning drives in RAID systems because, especially for recent hard 
disks, the recovery time in case of media errors could exceed kernel timeouts 
and possibly kick off the entire drive from the RAID set and, in turn, lead to 
a fault of a RAID5 system upon a subsequent error in a second drive. 

But in the case of SSD drives (where, possibly, the error recovery activities 
performed by the drive firmware are very fast) does the presence of the 
ERC/TLER capability really matter? Is the same scenario from the spinning 
drives case actually even probable or only theorical? 

Thank you for the considerations and evaluations you want to express. 

Gianluca 

             reply	other threads:[~2021-07-24 18:49 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-24 18:41 Gianluca Frustagli [this message]
2021-07-24 20:19 ` SSD based sw RAID: is ERC/TLER really important? Peter Grandi
2021-07-24 21:45   ` Phil Turmel
2021-07-25  7:00     ` Wols Lists
2021-07-25 10:28     ` Peter Grandi
2021-07-26  1:06       ` Phil Turmel
2021-07-26  7:57         ` Peter Grandi
2021-07-26 16:12           ` Peter Grandi
2021-07-25 11:04     ` Peter Grandi
2021-07-24 20:21 ` Andy Smith

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