Toshiba

Toshiba 1.8TB 10K SAS 12G 4Kn

AL15SEB18EQ
MG SeriesoltpCMR1.8TBSAS-12G2.5"
$36.91/TB
$66.44
newNot available
Price updated
Price accurate as of Sep 4, 2026, 12:00 AM
No current offer

The Toshiba 1.8TB 10K SAS 12G 4Kn is a 1.8TB SAS-12G HDD in new condition. It has no current offer on Amazon; the in-stock alternatives nearest its capacity are listed below.

In stock instead - nearest to 1.8TB

6 in-stock listings · this listing has no current offer on Amazon · ranked by live cost per tb, refreshed every few hours

DriveCapacityInterfaceRecordingCondition$/TBPrice
Toshiba 1.8TB 10K SAS 12G 2.5
AL15SEB18EQ
1.8TBSAS-12GCMRREFURB$44.03$79Buy
Dell VJ7CD 1.8TB 10K SAS 12G 512E
VJ7CD
1.8TBSAS-12GCMRNEW$80.56$145Buy
Dell MG03SCA200 2TB SAS 6G
MG03SCA200
2TBSAS-6GCMRREFURB$20.00$40Buy
Seagate BarraCuda 2TB ST2000DM001
ST2000DM001
2TBSATA-6GREFURB$32.00$64Buy
Toshiba MG03ACA200 2TB SATA Enterprise
MG03ACA200
2TBSATA-6GCMRREFURB$34.20$68Buy
HP P2000 2TB SAS 6G 7.2K
AP072B321
2TBSAS-6GCMRREFURB$34.49$69Buy
Before you buy: this is a SAS drive

SAS drives do not plug into a normal SATA motherboard port. You need a SAS host bus adapter or a backplane that speaks SAS - an LSI/Broadcom HBA in IT mode is the usual answer. A SATA drive will run on a SAS controller, but not the other way round. HBA and IT-mode guide

Same capacity, other options
DriveInterfaceCond$/TBPrice
Toshiba 1.8TB 10K SAS 12G 2.5SAS-12GRefurb$44.03$79.25Buy
Dell VJ7CD 1.8TB 10K SAS 12G 512ESAS-12GNew$80.56$145.00Buy

All 1.8TB drives we track, ranked by cost per terabyte.

Model context

Part of the Toshiba line we track.

Quick Verdict

The Toshiba 1.8TB 10K SAS 12G 4Kn is a 1.8TB 10K RPM SAS drive at $36.91/TB - double the random IOPS of 7200 RPM nearline. Best for OLTP and virtualization where NVMe budget is constrained.

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Specifications

Capacity1.8TB
Form Factor2.5"
InterfaceSAS-12G
Recording TechCMR
RPM10000
Cache
Sector Size4Kn
Workload Rating
Warranty
ASINB07GDTT9K2
Market context

We do not have enough in-stock comparators of this type today to place this price against the rest of the market. The category page below ranks everything we do have.

Where the wider market has moved

These are third-party figures about the retail market as a whole, quoted and dated. They are not our own measurements and they do not describe this specific drive.

Compare against every 1.8TB drive we track →Cheapest per terabyte, all categories →Category price trends →
How it compares - 1.8TB SAS-12G
#1Toshiba 1.8TB 10K SAS 12G 4KnTHIS DRIVE
$36.91/TB
#2Toshiba 1.8TB 10K SAS 12G 4KnTHIS DRIVE
$36.91/TB
#3Toshiba 1.8TB 10K SAS 12G 2.5
$44.03/TB
#4Dell VJ7CD 1.8TB 10K SAS 12G 512E
$80.56/TB
#5HP 791034-B21 1.8TB SAS 12G 10K Enterprise
$132.22/TB

Works in these NAS machines

Asustor (1 NAS series)
Vendor-listed
On Asustor's list as AL15SE AL15SEB18EQ

Resolved against manufacturer compatibility lists we read and dated, capped at 4. Vendor-listed means the manufacturer names this exact part number; fit-verified is our own check of form factor, interface and recording technology against a published requirement. Neither is a guess, and a drive the registry cannot resolve shows nothing here rather than a maybe. How compatibility actually works

Frequently Asked Questions

Yes. The 1.8TB 10K SAS 12G 4Kn uses CMR recording which is fully compatible with all RAID levels.

Warranty varies by seller. Check the Amazon listing for current warranty terms.

Compatible with any server or workstation equipped with a SAS HBA or SAS backplane. Tested with Dell PowerEdge, HPE ProLiant, Supermicro and IBM System x platforms.

Use Case Scenarios

🏠
Home & SMB NAS
Building a mid-range NAS for media, backups and file sharing.
~ Good fit
CMR recording is RAID-safe and fully compatible with Synology, QNAP, TrueNAS and UnRAID. New drives come with full warranty.
💾
Backup Server / Veeam Target
Dedicated backup storage for Veeam, Commvault, or NetBackup.
✓ Excellent fit
1.8TB SAS drives are ideal for backup targets. Dual-port SAS suits dual-path backup infrastructure.
🏦
Performance-Sensitive OLTP
10K RPM SAS for databases needing better IOPS without NVMe cost.
✓ Excellent fit
10K RPM delivers ~300 IOPS vs ~150 for 7200 RPM — double the random performance at a fraction of SSD cost. Use RAID 10 for optimal performance.

Maintenance & Troubleshooting

Maintenance Checklist

On installCheck SMART baseline on arrival
Run smartctl -a /dev/sdX and record: Reallocated_Sector_Ct, Power_On_Hours, Spin_Retry_Count. Establishes baseline for future comparison.
MonthlyRun SMART short self-test
smartctl -t short /dev/sdX — takes 1-2 minutes, catches most developing issues. Schedule during off-peak.
QuarterlyRun SMART long self-test
smartctl -t long /dev/sdX — full surface scan, takes 1 hours for 1.8TB. Any test failure is grounds for immediate replacement.
QuarterlyCheck RAID array health
Verify no degraded drives. A degraded array with no hot spare is one failure from data loss. Check mdstat or controller UI.
AnnuallyVerify drive firmware version
Check Toshiba support site for firmware updates. Some versions have known bugs affecting integrity.
Every 3-5 yearsPlan proactive replacement
Enterprise HDDs have higher failure rates after year 4-5. At 1.8TB per drive, budget for replacements before failures occur.

Troubleshooting Guide

Cause: HBA not initialized, SAS expander issue, cable fault, or incompatible controller.
Fix: Verify HBA firmware. Check SAS topology with sas2ircu or StorCLI. Test with known-good cable. Confirm drive is SAS not SATA.