MG08SDA800E Toshiba 8TB SAS: When SAS Beats SATA at 8TB
The MG08SDA800E is a Toshiba 8TB SAS enterprise hard drive from the MG08 series, and it is the SAS answer at a capacity where most buyers default to SATA. This covers when SAS is worth choosing here, and what to confirm before ordering.
What is the Toshiba MG08SDA800E?
A 3.5 inch, 8TB, SAS 12Gb/s enterprise nearline hard drive from the Toshiba MG08-D family. 7200 RPM class, conventional magnetic recording, 512e sector format, built for continuous operation.
Toshiba part numbers encode interface and configuration in the suffix — the SATA sibling carries a different code. Confirm the exact part on the label matches what you need. Our part numbers guide covers reading vendor suffixes.
Why choose SAS at 8TB?
Three reasons, and if none apply, SATA is cheaper.
Dual-port for multipath. SAS drives have two ports; SATA has one. Dual-controller arrays, clustered servers sharing a JBOD, and any system needing path redundancy require SAS. Our dual-port guide covers when this matters.
SAS backplanes and expanders. Some enclosures and arrays require SAS drives, or handle SATA drives less well behind an expander.
Better error handling and command queuing under mixed workloads. Our SAS vs SATA guide covers the full comparison.
For a single server with one controller and a capacity-tier workload, the SATA MG08 sibling does the same job for less.
Is the MG08SDA800E CMR?
Yes. Toshiba MG-series enterprise drives use conventional recording and are suitable for RAID and array workloads. Our SMR vs CMR guide covers why that needs confirming at every capacity.
What to confirm before buying
Four things.
Your controller supports SAS 12Gb/s or is backward compatible. Most SAS controllers are. A SATA-only controller cannot use this drive at all.
Sector format. This drive is 512e. Match the array. Our sector format guide covers this.
Firmware coding. Behind an HPE Smart Array, Dell PERC or similar vendor controller, a bare Toshiba may be flagged or refused during a rebuild. The vendor-coded equivalent is safer there. Our OEM guide covers this. Behind an HBA, the bare drive is fine.
Carrier. This is a bare drive. Hot-swap bays need the correct generation carrier for your chassis. Our caddies guide covers this.
MG08SDA800E vs the SATA version
Same platter stack, same recording technology, same capacity. The differences:
Interface: SAS 12Gb/s versus SATA 6Gb/s. For a single mechanical drive the interface speed is irrelevant; the drive cannot fill either.
Ports: two versus one.
Price: SAS costs more.
So the choice is entirely about whether your system needs SAS, not about performance. If it does, this drive. If it does not, the SATA sibling.
When NOT to buy this drive
SATA-only systems, obviously.
Single-controller servers where SATA would do, because you are paying for a second port you will not use.
Performance tiers. A nearline drive is a capacity drive. Our drive tier guide covers where 7200 RPM belongs.
Replacing a drive in an existing array unless it matches what is there in interface, capacity, sector format and class.
Frequently asked questions
Is the MG08SDA800E SAS or SATA?
SAS 12Gb/s. The Toshiba MG08 family has a SATA sibling under a different part number. Confirm the interface on the label.
Can I use a SAS drive in a SATA controller?
No. A SATA-only controller cannot use a SAS drive. SAS controllers can usually use SATA drives, but not the reverse.
Is the Toshiba MG08 CMR?
Yes. MG-series enterprise drives use conventional recording and are suitable for RAID and array use.
Is SAS faster than SATA for a hard drive?
Not meaningfully for a single mechanical drive; it cannot fill either interface. SAS is chosen for dual-port redundancy, backplane requirements and error handling, not throughput.
Will the MG08SDA800E work in an HPE or Dell server?
Behind an HBA, yes. Behind a Smart Array or PERC that validates firmware, a bare Toshiba may be flagged or refused during a rebuild; the vendor-coded equivalent is safer. It also needs the correct carrier for your chassis.
What is the difference between MG08SDA800E and MG08ADA800E?
Interface. The S variant is SAS; the A variant is SATA. Same capacity, same recording technology. Choose by what your system requires.
Toshiba MG08 Series
MG08SDA800E 8TB SAS 12Gb/s Enterprise Hard Drive
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