DatacenterDisk
Toshiba

1.8TB 10K SAS 12G 4Kn

AL15SEB18EQ
MG SeriesoltpCMR1.8TBSAS-12G2.5"
$36.91/TB
$66.44
newIn Stock
Updated Mar 27, 2026, 06:30 PM
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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.

Specifications

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

90-Day Price History

$35$37$3903/2304/2906/05
How it compares - 1.8TB SAS-12G
#1Dell VJ7CD 1.8TB 10K SAS 12G 512E
$32.22/TB
#2Dell VJ7CD 1.8TB 10K SAS 12G 512E
$33.04/TB
#3Toshiba 1.8TB 10K SAS 12G 4KnTHIS DRIVE
$36.91/TB
#4Toshiba 1.8TB 10K SAS 12G 4KnTHIS DRIVE
$36.91/TB
#5Toshiba 1.8TB 10K SAS 12G 2.5
$44.03/TB

Compare to similar 1.8TB SAS-12G drives

Dell
VJ7CD 1.8TB 10K SAS 12G 512E
$32.22/TB
$58.00
new
Dell
VJ7CD 1.8TB 10K SAS 12G 512E
$33.04/TB
$59.47
REFURB
Toshiba
1.8TB 10K SAS 12G 2.5
$44.03/TB
$79.25
new
Toshiba
1.8TB 10K SAS 12G 2.5
$44.03/TB
$79.25
REFURB
HP
791034-B21 1.8TB SAS 12G 10K Enterprise
$133.33/TB
$240.00
REFURB

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.