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The Drive You Buy When Your Backup Target Needs 200 TB of Raw Capacity and Your Budget Says NVMe Is Not Happening

Not every terabyte in your data center needs to respond in 80 microseconds. Backups, archives, CCTV footage, log aggregation, and cold data tiers need capacity, надежность, and low cost per terabyte — not IOPS. The Seagate Exos 7E10 8TB is a 7,200 RPM SATA enterprise drive rated at 2.5 million hours MTBF and 550 TB/year workload. It is the drive you deploy in pairs of twelve in a backup NAS, knowing that if one fails, the RAID 6 array rebuilds overnight and nobody gets paged at 3 AM.

Технические характеристики

Параметр	Спецификация
Емкость	8ТБ (also: 2ТБ, 4ТБ, 6ТБ, 10TB in Exos 7E10 series)
Фактор формы	3.5-дюйм LFF
Интерфейс	SATA 6Gb/s
Скорость вращения	7,200 Rpm
Recording Technology	CMR (Conventional Magnetic Recording) — no SMR write penalty
Cache Buffer	256 МБ
Sustained Transfer Rate	Вплоть до 255 МБ/с
Average Latency	4.16 ms
Среднее время безотказной работы	2,500,000 часы
АФР	0.35% (design target)
Workload Rate Limit	550 TB/year
URE Rate	1 sector per 10^15 bits
Власть (Праздный / Операционная)	3.7Вт / 5.0Вт
Размер сектора	512е (512-byte emulation)
Шок (Операционная / Non-Op)	70г / 300г
Physical	147.0 Икс 101.85 Икс 26.11 мм, 610г
Температура	5C to 60C
Гарантия	5-year limited (manufacturer)

Why 8TB in a World of 24TB Drives

The market has moved to 20TB+ for primary storage, but 8TB remains the sweet spot for three deployment patterns. First: backup targets where the backup application writes sequentially at near-line-rate and capacity scales by adding drives, not by buying bigger drives. Second: RAID arrays where rebuild time scales with drive capacity — an 8TB RAID 6 rebuild completes in 8 часы; a 24TB rebuild takes 28. Third: mixed-age fleets where adding 24TB drives to an existing 8TB array wastes 16TB of capacity per drive until the last 8TB drive is replaced. The 8TB Exos 7E10 keeps your array balanced without the capacity overhead penalty.

Three Deployments Where the Exos 7E10 Is the Right Drive

1. Backup NAS (RAID 6, 12 диски). 12x 8TB = 80 TB usable (RAID 6). Sequential write from Veeam or Commvault at 200-250 MB/s per drive. Rebuild time: ~8 hours. Cold spare on-site. Total drive cost: under $2,000. This is the backup target for a 50-VM environment that fits in the overnight backup window.

2. CCTV NVR Storage (RAID 5, 8 диски). 8x 8TB = 56 TB usable (RAID 5, acceptable for sequential write, read-mostly workload). 30 days of retention for 32 cameras at 4K 15fps. Sequential write, never random. Rebuild risk: low (RAID 5 on 8TB drives is less risky than RAID 5 on 24TB due to shorter rebuild time).

3. Log Aggregation (Jbood, 4 drives per Elasticsearch data node). 4x 8TB = 32 TB raw per node. Elasticsearch manages redundancy at the software level. Drive failure replaces one shard replica. No RAID overhead. Low cost per terabyte maximizes retention for compliance log data.

Compatible Platforms

SATA 6Gb/s, compatible with any server with 3.5-inch SATA bays. Dell PowerEdge R650/R660/R750/R760/R770, xFusion V7, Lenovo ThinkSystem. Works with PERC H730/H740/H750/H755/H965i in SATA mode, and any onboard SATA controller.