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HPE MC96 96W Smart Storage Cache Battery 876850-001
Inclusive of VAT · Warranty included
HPE
Product Specification
| Spare Number | 881093-210 |
| Type | Smart Storage Battery (RAID cache backup) |
| Rated Power | 96W |
| Function | Backup power for Smart Array controller write cache |
| Compatible Series | HPE Smart Array P440, P440ar, P840, P840ar |
Refurbished · Tested
HPE MC96 96W Smart Storage Battery, part number 876850-001, providing cache backup power for Smart Array controllers in ProLiant Gen9 servers.
The HPE MC96 is a 96W Smart Storage Battery, HPE part number 876850-001 and spare number 881093-210. It powers the write cache on HPE Smart Array controllers when mains power fails, so cached writes are preserved instead of lost. It is listed for the Smart Array P440, P440ar, P840 and P840ar, the controller generation fitted to HPE ProLiant Gen9 rack and tower servers. The P440 and P840 are PCIe cards. The P440ar and P840ar are AROC flexible array controllers. Server administrators and integrators in Doha and elsewhere in Qatar buy this refurbished module when a Gen9 server reports a missing or failed cache battery, or when a Smart Array controller is being added to a system without one. With a healthy battery present, the controller can run in write-back mode, which is where its RAID 5 and RAID 6 write performance comes from.
BAT-HP-MC96-96WSpecification
The rated power and the model code are the values to match when replacing a battery. Quote 96W together with the part number so the replacement matches the module the controller was built to use.
Without a working battery, Smart Array controllers normally disable write-back caching to avoid losing data in a power failure. Writes then go directly to the drives, and throughput drops noticeably on RAID 5 and RAID 6 arrays, where every write carries a parity calculation. The server's management tools also report a cache battery warning.
Installation
Shut the server down and disconnect the mains cords before fitting the battery, and handle the module with normal anti-static precautions. Mounting position and cable routing depend on the server chassis, and the battery needs the cable that suits that chassis, so have the correct cable fitted or to hand before you start. Seat the battery in its mounting position, connect the cable and route it clear of fans and airflow paths. After power-on, a new battery needs time to charge, and the controller may keep write-back caching disabled until charging completes. Once charged, the Smart Storage Administrator should report the battery as present and healthy with the cache enabled.
Part numbers and identification
Condition & testing
- Tested in a compatible system
- Verified against the listed part number and specification
- Fully working; minor cosmetic marks are possible on refurbished units.
- 6-month warranty on every unit we sell, with installation and support across Qatar.
What ships with this part
Images are for illustration. The unit supplied is the one described in the specification and may differ cosmetically.
Our team in Doha answers specification and compatibility questions during working hours.
Ask on WhatsApp sales@serverdove.comWhat does the HPE 96W Smart Storage Battery do?
It provides backup power to the write cache on HPE Smart Array RAID controllers. If the server loses power, the battery keeps the cache powered long enough for data awaiting write to be preserved. This allows the controller to run safely in write-back mode, which improves write performance compared with write-through operation.
Which Smart Array controllers is the 876850-001 battery used with?
The listing identifies it for use with the Smart Array P440, P440ar, P840 and P840ar controllers. These are the controllers typically found in HPE ProLiant Gen9 servers, either as a PCIe card (P440, P840) or as an AROC flexible array controller (P440ar, P840ar).
What happens if a Smart Array controller has no working cache battery?
Without a functioning battery, Smart Array controllers normally disable write-back caching to avoid losing data in a power failure. Writes then go directly to the drives, which noticeably reduces write throughput, especially on RAID 5 and RAID 6 arrays. The server's management tools usually also report a cache battery warning.
What is the difference between part number 876850-001 and spare number 881093-210?
HPE uses several numbers for the same component. The part number is printed on the module itself, while the spare number is the reference HPE uses for service replacements. Both identify this MC96 96W battery and can be used to match it against a failed unit or HPE service documentation.
Does the battery need a separate cable?
The battery connects to the server through a cable, and the required length and mounting position depend on the server model and chassis. Check that the server either has the correct cable fitted already or that one is sourced for it, using the server's documentation as the reference.
Is this battery used in ProLiant Gen9 servers?
Yes. The controllers it is listed for, the P440, P440ar, P840 and P840ar, are the Smart Array generation used in HPE ProLiant Gen9 rack and tower servers. It is commonly fitted when one of these controllers is installed with write caching enabled or when an existing battery has failed.
What does refurbished mean at ServerDove?
Off-lease or decommissioned enterprise hardware that we clean, test and reset in Doha. Every unit goes through POST, burn-in, memory and drive checks and a power-supply check, with firmware and BIOS returned to defaults and drives securely erased.
Can I ask about the exact unit before I buy?
Yes. Message us the SKU on WhatsApp and we will confirm the condition and configuration of the unit in stock, with photos if you want them.
How fast is delivery in Qatar?
Orders ship from Doha and arrive within one working day anywhere in Qatar. Delivery is free on orders over QAR 300.
Can I collect in person?
Yes, from Nuaija Office 7, Doha, usually within 24 hours of ordering. Choose pick-up at checkout and we will message you when it is ready.
What warranty is included?
A 6-month hardware warranty from the delivery date, covering the unit as supplied. If a part fails we repair or replace it. Full terms are on the warranty page.
What is your return policy?
If the unit arrives faulty or not as described, tell us and we will collect it and replace or refund it. Full terms are on the Refund Policy page.
Which payment methods do you accept?
Visa, Mastercard and American Express online. Bank transfer is available for company orders; contact us for details.
Do prices include VAT?
Yes, all prices shown include VAT, and every order ships with a tax invoice.
Why buy refurbished
Enterprise hardware, tested in Doha, at a fraction of the price of new
Every unit we sell has already proven itself in a data centre. We test it again, grade it, and back it with a warranty before it leaves our stock.
Tested before it ships
POST, burn-in, memory and power-supply checks on every unit. Anything that fails is repaired or pulled from stock, not sold.
Same performance, lower cost
A Xeon runs the same workloads whether it is new or two years old. Spend the difference on more CPUs, memory or storage.
In stock, not on order
New enterprise hardware can take weeks or months to arrive. Ours is on the shelf in Doha and delivered across Qatar within a day.
Warranty and local support
Every unit is covered. Installation, configuration and hardware support are handled by our own team in Qatar, not a call centre abroad.