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Silver 3.5 inch SAS hard drive with tray, bare drive packaging

DELL

DELL RY491 146GB 3.5" 15000 RPM SAS internal hard drive

SKU CH-S0WG-RH4RM MPN RY491

146 GB 3.5" SAS drive spins at 15000 RPM with 16 MB cache for server workloads

  • PackagingBare Drive
  • InterfaceSerial Attached SCSI (SAS)
  • Capacity146GB
  • RPM15000 RPM
  • Cache16MB
  • Average Latency6Gb/s
  • 15000 RPM spindle speed cuts data-access latency
  • 146 GB capacity on a 3.5 inch form factor
  • SAS interface delivers 6 Gb/s host throughput
  • 16 MB cache buffers burst I/O workloads
  • 0 inch low-profile height fits dense server bays

Enterprise storage drive

The Dell RY491 is a 146GB 3.5-inch internal hard drive spinning at 15000 RPM with a 16MB cache. It connects through a Serial Attached SCSI (SAS) interface rated at 6Gb/s average latency. The drive is supplied as a bare unit with a tray and is built for server environments where consistent throughput matters.

Sustained workload behaviour

At 15000 RPM the platters maintain high rotational speed during long read and write sequences, reducing latency spikes compared with slower drives. The 16MB buffer absorbs burst traffic while the SAS link keeps command queuing efficient across multiple outstanding I/O requests. This combination suits database logs, virtualisation hosts and other write-heavy server tasks that run for hours.

Thermals noise and power

The low-profile 1.0-inch height allows tighter stacking in drive bays while still moving enough air to keep temperatures stable under continuous operation. SAS signalling runs at lower voltage than older parallel SCSI, helping limit power draw during sustained transfers. Acoustic output remains typical for a 15000 RPM mechanism in a server chassis where fan noise dominates.

Points forts

  • 15000 RPM spindle speed cuts data-access latency
  • 146 GB capacity on a 3.5 inch form factor
  • SAS interface delivers 6 Gb/s host throughput
  • 16 MB cache buffers burst I/O workloads
  • 0 inch low-profile height fits dense server bays

Caractéristiques

BrandDell
ModelRY491
PackagingBare Drive
InterfaceSerial Attached SCSI (SAS)
Capacity146GB
RPM15000 RPM
Cache16MB
Average Latency6Gb/s
FeaturesHard Drive
UsageIdeal for Servers
Form Factor3.5"
Poids d’expédition4.99 kg
Dimensions du colis25 × 25 × 25 mm

Questions sur cet article

How loud and hot does the 15000 RPM mechanism run inside a server chassis all day?

The 15000 RPM spindle and 1.0-inch low-profile form factor are designed for server airflow; expect higher heat and noise than slower desktop drives, so adequate chassis cooling is essential.

What controller or backplane must my system already provide for the SAS interface to work?

A SAS host bus adapter, RAID controller, or server backplane with a native SAS port is required; the drive uses a standard SAS interface and 6Gb/s signalling.

Will the 3.5-inch tray and SAS connector fit the older hot-swap bays I already use?

The drive ships with a 3.5-inch tray and standard SAS connector, matching common server hot-swap bays that accept low-profile 1.0-inch SAS drives.

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