BackBlaze article on HDD failure rates. Post: 302978776

Sponsored Content

Special Forums Hardware BackBlaze article on HDD failure rates. Post 302978776 by Corona688 on Wednesday 3rd of August 2016 05:03:01 PM

08-03-2016

Registered User

I've noticed that these are consumer-class drives, not server-class. I can't remember the last time WD was considered a reliable brand? Back when drives came with defect lists, perhaps. Cheap and cheerful has been WD's strategy, and while it's worked for them, it's also given them a black mark. You can get better from WD if you're willing to pay -- but who would? Given that, I'm not surprised WD bought Hitachi. They needed better drives and a better name, and HGST -- Hitachi -- has been excellent for a long time. Though they have their dark times too, remember the IBM Deathstar? (I'd almost forgotten they were responsible for that...)

That said -- drive reliability went down steadily once capacities exploded into the dozens then hundreds and thousands of gigabytes. The drive industry chopped their warranties from 3 to 1 years long ago to reflect this, they're inevitably more sensitive devices. The number of spare sectors a modern hard drive keeps -- the percentage of sectors which can die and not be considered a fault -- is disturbing.

Corona688

View Public Profile for Corona688

Visit Corona688's homepage!

Find all posts by Corona688

7 More Discussions You Might Find Interesting

1. Advertise with Us

Special Discount Rates for Job Posting In Effect

The UNIX and Linux Job Board is a service provided by the The UNIX and Linux Forums to help employers connect with UNIX and Linux professionals. All proceeds from this service go towards supporting the forums. Please PM Neo or email with any questions about this service. Promotion A: $99 ...

2. UNIX for Dummies Questions & Answers

Old HDD copy to new HDD ? im lost...

Over the last few months the HDD spins louder and louder, so I fiqured its time to replace the HDD. Its been running 24/7/365 since 98 :eek:. yes i said since 98 :D I have an IBM system 43P Model 240. 233 MHz. running AIX Version 4. The current HDD is an IBM DGHS COMP IEC -950 FRU PN#...

3. AIX

Scan Rates

Dear Gurus, Can any one advice about the normal limits for the Page scanning rates on the AIX platforms, i am having enormous values for the scan rate along the hour it may reache 3000 pages/sec. Regards, Negm

4. What is on Your Mind?

Where to find higher consulting rates?

Have any IT consultants here been on a project where you knew the bill rate was really high but you only got a tiny piece of it (like paid $60/hr and billed out around $200)? Does anyone know of a company that pays consultants well - like 70-80% or more of what they're getting?

5. Cybersecurity

Virus/Malware Uptake Rates

Hi. I'm trying to get information about the rates at which viruses and malware infect computers. Let's say that Mr. Dastardly Developer discovers an exploitable flaw, writes a virus to take advantage of it, and releases the virus. Assuming that a large-scale attack method is chosen (Facebook,...

6. UNIX for Dummies Questions & Answers

boot up failure unix sco after power failure

hi power went out. next day unix sco wont boot up error code 303. any help appreciated as we are clueless.

7. AIX

IBM AIX Internal HDD vs SAN HDD and Oracle

Hi Folks, I am facing an issue with the performance. P4 with 1 processor and 16 GB RAM and SAN HDD = Oracle report takes 25 minutes P5 with 2 processors and 16 GB RAM internall HDD with LPAR = Oracle Report takes 1 hour 15 minutes ( please note I have assigned all the max processors and...

LEARN ABOUT NETBSD

mlxctl

MLXCTL(8)						    BSD System Manager's Manual 						 MLXCTL(8)

NAME

     mlxctl -- Mylex DAC960 family management utility

SYNOPSIS

     mlxctl [-f dev] [-v] [-a] status [drive] [...]
     mlxctl [-f dev] [-a] detach [drive] [...]
     mlxctl [-f dev] [-a] check [drive] [...]
     mlxctl [-f dev] rebuild channel:target
     mlxctl [-f dev] cstatus
     mlxctl [-f dev] rescan
     mlxctl [-f dev] config

DESCRIPTION

     The mlxctl utility performs status monitoring and management functions for Mylex DAC960 RAID controllers and attached devices.

     The following options are available:

     -a       Apply the action to all drives attached to the controller.

     -f dev   Specify the control device to use.  The default is /dev/mlx0.

     -v       Increased verbosity.

     The following commands are available:

     cstatus  Display the controller's current status.

     status   Display the status of the specified drives.  This command returns 0 if all drives tested are online, 1 if one or more drives are
	      critical and 2 if one or more are offline.

     rescan   Re-scan the logical drive table, and attach or detach devices from the system as necessary.

     detach   Detach the specified drives.  Drives must be unmounted and unopened for this command to succeed.

     check    Initiate a consistency check and repair pass on a drive that provides redundancy (e.g., RAID1 or RAID5).	This command returns imme-
	      diately.	The status command can be used to monitor the progress of the check.

     rebuild  Rebuild onto the specified physical drive.  Note that there can be only one running rebuild operation per controller at any given
	      time.  This command returns immediately.	The cstatus command can be used to monitor the progress of the rebuild.

     config   Write the current system drive configuration to stdout.

EXAMPLES

     Display the status of drive ld3 attached to the controller mlx1:

	   mlxctl -f /dev/mlx1 -v status ld3

SEE ALSO

     ld(4), mlx(4)

HISTORY

     The mlxctl command first appeared in NetBSD 1.5.3, and was based on the mlxcontrol utility found in FreeBSD.

BUGS

     Modifying drive configuration is not yet supported.

     Some commands do not work with older firmware revisions.

     Error log extraction is not yet supported.

BSD
								  April 10, 2000							       BSD