ESISO countered at 10@$44 and I accepted, so I'll be replacing all the HDDs in my NAS soon.
6TB Seagate Exos SAS - $46
- Thread starter FlorianZ
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It seems like a great price, but the extra power for the same capacity of larger drives over years seems to outweigh the immediate savings?
Vibrant accepted offer of $38e for 21 drives.
For me, it's about the number of spindles, amount of total storage needed, and $/TB.
I have 48 empty 3.5" bays, but have no need for 480TB raw (10TB drives). For the 6x I purchased for $240, I get 24TB usable (4x data, 1x parity, 1x spare), or $10/TB. I could have grabbed 5x 10TB drives to give me 30TB usable (3x data, 1x parity, 1x spare), but that would have cost me $700, or $23/TB.
If these 6x work out OK (no errors, easy format, etc.), then I'll grab another 12 or so, and end up with 72TB usable for only $20 more than the 5x 10TB drives.
In addition ["But wait, there's more!"], larger (newer) drives are typically more power efficient, just on a drive-to-drive comparison.
HGST 4TB SAS (HUS724040ALS640): Idle 7.6w, SeqRead 9.0w
HGST 10TB SAS (HUH721010AL4200): Idle 5.9w, SeqRead 7.5w
When we quantify, to highlight your point: same capacity of larger drives
(I.e., 40 TB storage - 10x 4TB vs. 4x 10TB)
Idle 76w vs 24w ; SeqRead 90w vs 30w
That's US$50+ per year!
I think this makes sense for newer drives, but in the same product series, smaller drives are typically more efficient than larger ones. Also, these Seagate drives are from 2018, so not crazy old. The 4TB HGST drive you mentioned as an example is from circa 2013.
If you factor density into your definition of efficiency, though, I do agree that depending on your use case you can do better than these drives. There are still plenty of cases where it makes sense to jump on this deal, though. And with all things homelab, cost savings over time are always iffy: There is no guarantee that you won't get the upgrade itch prior to the purchase "paying off" ;-)
Good points.
I wasn't trying to "slant" the comparison by cherry-picking data. I only use/buy HGST drives, and they (aka WDC
) tend to retire lower capacities from newer series. (I also had the [attached] "evidence" handy.)Aside from the fact that this deal IS for Seagate drives, circa-2018 6TBs @$7/TB vs circa-2017/8 (hgst) 10TBs @$10/TB does warrant consideration.
My anecdotal evidence,
Oct-Dec 2021, purchased over 60 x 6TB SAS drives, form various ebay seller. similar to this deals price range.
Got 25 x Seagates 6TB SAS drives, rest are HGST 6TB SAS.
All HGST 6TB SAS passed 4 days of badblock tests.
out of 25 x Seagate drives had 7 failed drives.
Wasted at least 10 days of life testing and trying to repair drive.
From Dec 2021 to now, I swear that I won't buy any more used Seagate SAS drives.
Here I am today , itching and thinking buying more Seagate drives.
I'm living on the edge and not running badblocks on the two that arrived yesterday...just slapped them straight into my array and started resilvering.
Mine came with 512b sectors (no 520 reformat needed).
And FYI...these do have Power Disable on power pin 3, so be aware if your cables or backplane supply 3.3v... (my SuperMicro backplane worked fine, my Norco backplane required the tape mod).
Mine came with 512b sectors (no 520 reformat needed).
And FYI...these do have Power Disable on power pin 3, so be aware if your cables or backplane supply 3.3v... (my SuperMicro backplane worked fine, my Norco backplane required the tape mod).
put in an offer of 60 @ 35, waiting to see...
accepted 60@35
accepted 60@35
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Box of 10 drives arrived today from ESISO. They were packed well enough. 4 drives are installed and running badblocks tests.
As reported earlier in the thread the drives are from 2018, but they have wildly different POH: 34, 49, 4279, and 11116 (for those four drives). Hard to believe drives from 2018 have less than 50 POH...
As reported earlier in the thread the drives are from 2018, but they have wildly different POH: 34, 49, 4279, and 11116 (for those four drives). Hard to believe drives from 2018 have less than 50 POH...
My 6 drives arrived from Vibrant. Well packed in a 10-disk shipping box with foam on all sides and between the drives.
I tried to start badblocks last night, but ran into the "L2/L3 cache error" on my Fujitsu C400i, and grabbed all the files to flash it to the latest Broadcom IT firmware, but had to quit for the night before the flash. I've got 8 bays on the test rig, so I should be able to run it in parallel.
I tried to start badblocks last night, but ran into the "L2/L3 cache error" on my Fujitsu C400i, and grabbed all the files to flash it to the latest Broadcom IT firmware, but had to quit for the night before the flash. I've got 8 bays on the test rig, so I should be able to run it in parallel.