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- Description
- Specifications
4GN49 is the Dell part number for a 300GB 2.5 inch SAS hard drive with Toshiba model number AL13SXB300N, a 15,000 RPM Enterprise Performance drive. The N in the model number means 512-byte native sectors, and this 300 GB variant has a 6 Gbit/s SAS interface and a 64 MiB buffer.
Average latency is 2.0 ms, average seek time is 2.7 ms on reads and 3.0 ms on writes, and the sustained data rate is 228 MB/s. Typical operating power is 9.0 W. MTTF is 2 million hours, the unrecoverable error rate is 1 in 10^16 and the workload rating is unlimited for 24/7 duty.
The AL13SX family has a 15 mm high 2.5 inch body and tops out at 600 GB; the other capacities are 450 GB and 600 GB. Toshiba presented it as a migration path from older 3.5 inch 15,000 RPM drives, offering the same 600 GB capacity with lower latency and significant power savings. Persistent write cache is built into the 4K native and 512e versions only.
The 12 Gbit/s drive of the same capacity is the 0RVDT.
| 4GN49 Specs | |
| Part number | 4GN49 |
| Capacity | 300 GB |
| Interface | SAS 6 Gbit/s |
| Form factor | 2.5 inch, 15 mm |
| Spindle speed | 15,000 RPM |
| Sector format | 512 native |
| Buffer | 64 MiB |
| Average latency | 2.0 ms |
| Seek time (read/write) | 2.7/3.0 ms |
| Sustained transfer | 228 MB/s |
| Operating power | 9.0 W typical |
| MTTF | 2 million hours |