Seagate Mobile ST1000LM035

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Dibrom

Dibrom

Member
Oct 17, 2024
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0
I've got one of these weird Seagate mobile laptop drives obviously removed at some point for upgrade. It's one of these:
https://www.disctech.com/Seagate-ST1000LM035-1TB-SATA-Hard-Drive

The drive is significantly thinner and lighter than conventional 2.5" drives of same capacity. Perhaps due to aluminium and plastic case construction rather than steel. SpinRite seems to have some sort of issues dealing with it, or at least all of it. My guess is the drive is some sort of hybrid between an SSD and a conventional mechanical drive.

Perhaps the intention was for it to be partitioned into a SSD section the OS was loaded on and then the remainder mechanical section was for non-speed critical storage. I really don't know and am only guessing. I'm not using it in a laptop or for what it was no doubt designed and intended for originally.

Has anyone come across this sort of drive before and are there any special settings to use on SpinRite for dealing with drives of this kind?
 
Key Unusual Features

Ultra-thin 7mm z-height (2.5" form factor): This was Seagate's highest-capacity thin laptop drive at launch, enabling 1TB (and up to 2TB in the related ST2000LM007) in a very slim package. Most other contemporary 1TB 2.5" HDDs were thicker (usually 9.5mm). It weighs only ~90g and fits modern slim laptops or ultra-portable devices where space is tight.
seagate.com

Shingled Magnetic Recording (SMR) technology: This is the biggest performance differentiator. It uses overlapping tracks (like roof shingles) for higher areal density—achieving ~1TB per platter (this model typically uses a single platter). Traditional CMR/PMR drives write tracks side-by-side without overlap. SMR allows cheaper/higher-capacity drives but leads to slower random and sustained write performance, especially when the drive is full or under heavy write loads (it has to rewrite entire "bands" of tracks). It's fine for mostly sequential workloads like media storage, backups, or archives but not ideal for OS boot drives, frequent random writes, or heavy multitasking. Many users and data-recovery pros note this behavior.
seagate.com

Large 128MB cache: Bigger than many competing laptop HDDs (e.g., some Toshiba or older Seagate models had 8–32MB). Combined with the 5400 RPM spindle and up to ~140 MB/s sustained transfer, it helps smooth out some performance in lighter use.
disctech.com

Might be the shingled aspect.....
 
SpinRite doesn't see the full capacity of the drive. The drive has not failed and can be written to its entire 1TB sticker capacity, so by that I think its a SpinRite thing, not a failed drive. This is the only drive I have of this type, so I can't swap with another and see if it behaves differently. Yes, I will share the log files if I can figure out how to do that. I've just bought a used Seagate Barracuda Pro 10TB though that will need scanning first, so it might be a few days before I can get back to this strange one.
 
Dibrom said:
Yes, I will share the log files if I can figure out how to do that.
Click to expand...
They are in the SRLOGS folder on your SpinRite flashdrive. I recommend putting them in a ZIP file, then attaching them to a post in this thread.
 
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