Lenovo 4XB7A17054 ThinkSystem 2.5-inch PM1643a 3.84TB Read Intensive SAS 12Gb Hot-Swap SSD — Used
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Lenovo 4XB7A17054 ThinkSystem 2.5-inch PM1643a 3.84TB Read Intensive SAS 12Gb Hot-Swap SSD — Used
Title
Lenovo 4XB7A17054 ThinkSystem 2.5-inch PM1643a 3.84TB Read Intensive SAS 12Gb Hot-Swap SSD — Used
Keywords
lenovo 4xb7a17054, pm1643a 3.84tb, 3.84tb sas 12gb ssd, read intensive ssd, used enterprise ssd, thinksystem sas ssd
Description
The Lenovo lenovo 4xb7a17054 is a ThinkSystem 2.5-inch pm1643a 3.84tb read intensive ssd on a 12Gb/s SAS interface, supplied in a ThinkSystem hot-swap tray. This unit is sold in used condition. The price is $994 per unit.
Lenovo lists 4XB7A17054, feature code B91C, as the "ThinkSystem 2.5" PM1643a 3.84TB Entry SAS 12Gb Hot Swap SSD". Lenovo uses the word "Entry" for this read-intensive class. The drive is built on Samsung 64-layer V-NAND with TLC flash. Lenovo has withdrawn the PM1643a Entry drives from marketing, so used and spare units like this one are the usual way to match drives already installed in a server.
Lenovo rates the new drive at 1 drive write per day for five years, or 7,008TB written in total. Performance is rated at 230,000 random 4KB read IOPS and 85,000 random 4KB write IOPS, with 1,000 MB/s sequential read and 1,000 MB/s sequential write at 128KB. Random read latency is 120 µs and random write latency is 45 µs.
Because this is a used enterprise ssd drive, part of the rated write endurance may already be consumed. The listing does not state power-on hours, remaining endurance, or a health percentage. Check the drive's S.M.A.R.T. data after installation. The drive has no SED encryption. It does include power-loss protection, end-to-end data protection, and S.M.A.R.T. reporting.
Buyers who need a 3.84tb sas 12gb ssd drive to match or replace PM1643a drives in a ThinkSystem server can order the lenovo 4xb7a17054 at $994 per unit. The listing is one drive with its hot-swap tray. A warranty term is not stated.
Key Features
- Part number — lenovo 4xb7a17054, feature code B91C.
- Condition — Used.
- Capacity and interface — 3.84TB, 3.84tb sas 12gb ssd, 2.5-inch hot-swap with ThinkSystem tray.
- Flash — Samsung 64-layer V-NAND TLC, pm1643a 3.84tb.
- Rated endurance when new — read intensive ssd, 1 DWPD for 5 years, 7,008TB written.
- Performance — 230,000 / 85,000 random 4KB read / write IOPS, 1,000 MB/s sequential.
- Protection — power-loss protection, end-to-end data protection, S.M.A.R.T. No SED encryption.
- Price — $994 per unit.
Configuration
| Specification | Detail |
|---|---|
| Part Number | 4XB7A17054 |
| Feature Code | B91C |
| Lenovo Description | ThinkSystem 2.5" PM1643a 3.84TB Entry SAS 12Gb Hot Swap SSD |
| Condition | Used |
| Capacity | 3.84TB |
| Interface | 12Gb/s SAS, single port |
| Form Factor | 2.5-inch hot-swap, with ThinkSystem hot-swap tray |
| Flash | Samsung 64-layer V-NAND, TLC |
| Encryption | None, no SED |
| Rated Endurance (new) | 1 DWPD for 5 years, 7,008TB total bytes written |
| Random 4KB Read / Write | 230,000 / 85,000 IOPS |
| Sequential 128KB Read / Write | 1,000 / 1,000 MB/s |
| Latency | 120 µs random read, 45 µs random write |
| MTBF | 2,000,000 hours |
| UBER | < 1 in 10^17 bits read |
| Lenovo Status | Withdrawn from marketing |
| Price | $994 per unit |
Compatibility
The lenovo 4xb7a17054 is a thinksystem sas ssd drive for ThinkSystem servers with 2.5-inch SAS hot-swap bays. It ships in the ThinkSystem 2.5-inch hot-swap tray. Lenovo's product guide for the PM1643a Entry drives, LP1257, lists the supported ThinkSystem servers.
The drive runs at 12Gb/s SAS. It also works on 24Gb/s SAS controllers and backplanes, but it stays at its 12Gb/s rating. SAS drives do not work on SATA-only controllers.
The drive is single-port and has no SED encryption. If a server's drive pool uses SED drives with encryption enabled, this drive will not match that pool. For RAID groups, match capacity and interface with the drives already installed.
Usage Scenarios
Matching an existing array: Lenovo no longer sells the PM1643a Entry drives new. A used lenovo 4xb7a17054 lets a ThinkSystem owner replace a failed drive with the same model instead of mixing drive types in a RAID group.
Read-heavy workloads: As a read intensive ssd, the drive suits file serving, web content, application data, and read-mostly databases. 230,000 random read IOPS is far above what spinning SAS disks can deliver.
Lower-cost capacity: A used 3.84tb sas 12gb ssd drive gives 3.84TB of SSD capacity at a lower price than a current-generation 24Gb drive. It suits test, development, and secondary storage where cost matters more than peak speed.
Endurance planning: Rated endurance is 7,008TB written when new. Because this is a used enterprise ssd drive, check its wear level before placing it in a write-heavy role.
What this price covers: $994 per unit is one used 3.84TB 2.5-inch SAS 12Gb hot-swap SSD with its ThinkSystem tray. The listing does not state power-on hours, remaining endurance, or a warranty term.
Frequently Asked Questions
Q: Is 4XB7A17054 a Samsung PM1643a?
A: Yes. Lenovo lists 4XB7A17054 as the ThinkSystem 2.5" PM1643a 3.84TB Entry SAS 12Gb Hot Swap SSD, feature code B91C. The pm1643a 3.84tb is built on Samsung 64-layer V-NAND TLC.
Q: What are the endurance and performance ratings?
A: Lenovo rates the new drive at 1 DWPD for five years, 7,008TB written, with 230,000 random read and 85,000 random write IOPS, and 1,000 MB/s sequential read and write. This listing is a used enterprise ssd drive, so remaining endurance depends on its past use.
Q: Does this drive support SED encryption?
A: No. The PM1643a Entry drives have no SED encryption. They do include power-loss protection and end-to-end data protection.
Q: Is $994 per unit the price for one drive?
A: Yes. $994 per unit is for one used 3.84tb sas 12gb ssd drive with its hot-swap tray.
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